diff --git a/src/food-market.api/Controllers/Catalog/ProductsController.cs b/src/food-market.api/Controllers/Catalog/ProductsController.cs
index be95457..1248014 100644
--- a/src/food-market.api/Controllers/Catalog/ProductsController.cs
+++ b/src/food-market.api/Controllers/Catalog/ProductsController.cs
@@ -172,6 +172,8 @@ private async Task<decimal> ResolveDefaultVatAsync(CancellationToken ct)
             ("packaging", true) => q.OrderByDescending(p => p.Packaging).ThenBy(p => p.Name),
             ("purchasePrice", false) => q.OrderBy(p => p.ReferencePrice).ThenBy(p => p.Name),
             ("purchasePrice", true) => q.OrderByDescending(p => p.ReferencePrice).ThenBy(p => p.Name),
+            ("cost", false) => q.OrderBy(p => p.Cost).ThenBy(p => p.Name),
+            ("cost", true) => q.OrderByDescending(p => p.Cost).ThenBy(p => p.Name),
             ("systemPrice", false) => q.OrderBy(p => p.Prices.Where(pr => pr.PriceType!.IsSystem).Select(pr => (decimal?)pr.Amount).FirstOrDefault()).ThenBy(p => p.Name),
             ("systemPrice", true) => q.OrderByDescending(p => p.Prices.Where(pr => pr.PriceType!.IsSystem).Select(pr => (decimal?)pr.Amount).FirstOrDefault()).ThenBy(p => p.Name),
             ("vat", false) => q.OrderBy(p => p.Vat).ThenBy(p => p.Name),
diff --git a/src/food-market.web/src/pages/ProductEditPage.tsx b/src/food-market.web/src/pages/ProductEditPage.tsx
index f65a0b9..b8c1dae 100644
--- a/src/food-market.web/src/pages/ProductEditPage.tsx
+++ b/src/food-market.web/src/pages/ProductEditPage.tsx
@@ -6,7 +6,7 @@ import { api } from '@/lib/api'
 import { Button } from '@/components/Button'
 import { Field, TextInput, TextArea, Select, Checkbox, MoneyInput, NumberInput } from '@/components/Field'
 import {
-  useUnits, useProductGroups, useCountries, useCurrencies, usePriceTypes, useSuppliers,
+  useUnits, useProductGroups, useCountries, useCurrencies, usePriceTypes,
 } from '@/lib/useLookups'
 import { useOrgSettings } from '@/lib/useOrgSettings'
 import { BarcodeType, Packaging, type Product } from '@/lib/types'
@@ -24,7 +24,6 @@ interface Form {
   vat: number
   vatEnabled: boolean
   productGroupId: string
-  defaultSupplierId: string
   countryOfOriginId: string
   isService: boolean
   packaging: Packaging
@@ -42,7 +41,7 @@ interface Form {
 const emptyForm: Form = {
   name: '', article: '', description: '',
   unitOfMeasureId: '', vat: 16, vatEnabled: true,
-  productGroupId: '', defaultSupplierId: '', countryOfOriginId: '',
+  productGroupId: '', countryOfOriginId: '',
   isService: false, packaging: Packaging.Piece, isMarked: false,
   minStock: '', maxStock: '',
   referencePrice: '', purchaseCurrencyId: '',
@@ -63,7 +62,6 @@ export function ProductEditPage() {
   const currencies = useCurrencies()
   const priceTypes = usePriceTypes()
   const org = useOrgSettings()
-  const suppliers = useSuppliers()
 
   const existing = useQuery({
     queryKey: ['/api/catalog/products', id],
@@ -80,7 +78,7 @@ export function ProductEditPage() {
       setForm({
         name: p.name, article: p.article ?? '', description: p.description ?? '',
         unitOfMeasureId: p.unitOfMeasureId, vat: p.vat, vatEnabled: p.vatEnabled,
-        productGroupId: p.productGroupId ?? '', defaultSupplierId: p.defaultSupplierId ?? '',
+        productGroupId: p.productGroupId ?? '',
         countryOfOriginId: p.countryOfOriginId ?? '',
         isService: p.isService, packaging: p.packaging, isMarked: p.isMarked,
 
@@ -145,7 +143,7 @@ export function ProductEditPage() {
         vat: org.data?.showVatEnabledOnProduct ? form.vat : null,
         vatEnabled: form.vatEnabled,
         productGroupId: form.productGroupId || null,
-        defaultSupplierId: form.defaultSupplierId || null,
+        defaultSupplierId: null,
         countryOfOriginId: form.countryOfOriginId || null,
         isService: form.isService,
         packaging: form.packaging,
@@ -332,65 +330,6 @@ export function ProductEditPage() {
             )}
           </Section>
 
-          <Section title="Классификация">
-            <Grid cols={3}>
-              <Field label="Группа *">
-                <Select required value={form.productGroupId} onChange={(e) => setForm({ ...form, productGroupId: e.target.value })}>
-                  {groups.data?.map((g) => <option key={g.id} value={g.id}>{g.path}</option>)}
-                </Select>
-              </Field>
-              <Field label="Единица измерения *">
-                <Select required value={form.unitOfMeasureId} onChange={(e) => setForm({ ...form, unitOfMeasureId: e.target.value })}>
-                  {units.data?.map((u) => <option key={u.id} value={u.id}>{u.name}</option>)}
-                </Select>
-              </Field>
-              <Field label="Фасовка">
-                <Select value={form.packaging} onChange={(e) => setForm({ ...form, packaging: Number(e.target.value) as Packaging })}>
-                  <option value={Packaging.Piece}>Штучный</option>
-                  <option value={Packaging.Weight}>Весовой</option>
-                  <option value={Packaging.Liquid}>Разливной</option>
-                </Select>
-              </Field>
-            </Grid>
-            <Grid cols={2}>
-              <Field label="Основной поставщик">
-                <Select value={form.defaultSupplierId} onChange={(e) => setForm({ ...form, defaultSupplierId: e.target.value })}>
-                  <option value="">—</option>
-                  {suppliers.data?.map((c) => <option key={c.id} value={c.id}>{c.name}</option>)}
-                </Select>
-              </Field>
-              {org.data?.showCountryOfOriginOnProduct && (
-                <Field label="Страна происхождения">
-                  <Select value={form.countryOfOriginId} onChange={(e) => setForm({ ...form, countryOfOriginId: e.target.value })}>
-                    <option value="">—</option>
-                    {countries.data?.map((c) => <option key={c.id} value={c.id}>{c.name}</option>)}
-                  </Select>
-                </Field>
-              )}
-            </Grid>
-            {org.data?.showVatEnabledOnProduct && form.vatEnabled && (
-              <Grid cols={3}>
-                <Field label="Ставка НДС, %">
-                  <NumberInput
-                    value={form.vat}
-                    onChange={(n) => setForm({ ...form, vat: n ?? 0 })}
-                  />
-                </Field>
-              </Grid>
-            )}
-            <div className="pt-3 mt-3 border-t border-slate-100 dark:border-slate-800 flex flex-wrap gap-x-6 gap-y-2">
-              {org.data?.showVatEnabledOnProduct && (
-                <Checkbox label="В том числе НДС" checked={form.vatEnabled} onChange={(v) => setForm({ ...form, vatEnabled: v })} />
-              )}
-              {org.data?.showServiceOnProduct && (
-                <Checkbox label="Услуга" checked={form.isService} onChange={(v) => setForm({ ...form, isService: v })} />
-              )}
-              {org.data?.showMarkedOnProduct && (
-                <Checkbox label="Маркируемый (Честный знак / Datamatrix)" checked={form.isMarked} onChange={(v) => setForm({ ...form, isMarked: v })} />
-              )}
-            </div>
-          </Section>
-
           <Section
             title="Цены"
             action={
@@ -506,6 +445,59 @@ export function ProductEditPage() {
             )}
           </Section>
 
+          <Section title="Классификация">
+            <Grid cols={3}>
+              <Field label="Группа *">
+                <Select required value={form.productGroupId} onChange={(e) => setForm({ ...form, productGroupId: e.target.value })}>
+                  {groups.data?.map((g) => <option key={g.id} value={g.id}>{g.path}</option>)}
+                </Select>
+              </Field>
+              <Field label="Единица измерения *">
+                <Select required value={form.unitOfMeasureId} onChange={(e) => setForm({ ...form, unitOfMeasureId: e.target.value })}>
+                  {units.data?.map((u) => <option key={u.id} value={u.id}>{u.name}</option>)}
+                </Select>
+              </Field>
+              <Field label="Фасовка">
+                <Select value={form.packaging} onChange={(e) => setForm({ ...form, packaging: Number(e.target.value) as Packaging })}>
+                  <option value={Packaging.Piece}>Штучный</option>
+                  <option value={Packaging.Weight}>Весовой</option>
+                  <option value={Packaging.Liquid}>Разливной</option>
+                </Select>
+              </Field>
+            </Grid>
+            {org.data?.showCountryOfOriginOnProduct && (
+              <Grid cols={2}>
+                <Field label="Страна происхождения">
+                  <Select value={form.countryOfOriginId} onChange={(e) => setForm({ ...form, countryOfOriginId: e.target.value })}>
+                    <option value="">—</option>
+                    {countries.data?.map((c) => <option key={c.id} value={c.id}>{c.name}</option>)}
+                  </Select>
+                </Field>
+              </Grid>
+            )}
+            {org.data?.showVatEnabledOnProduct && form.vatEnabled && (
+              <Grid cols={3}>
+                <Field label="Ставка НДС, %">
+                  <NumberInput
+                    value={form.vat}
+                    onChange={(n) => setForm({ ...form, vat: n ?? 0 })}
+                  />
+                </Field>
+              </Grid>
+            )}
+            <div className="pt-3 mt-3 border-t border-slate-100 dark:border-slate-800 flex flex-wrap gap-x-6 gap-y-2">
+              {org.data?.showVatEnabledOnProduct && (
+                <Checkbox label="В том числе НДС" checked={form.vatEnabled} onChange={(v) => setForm({ ...form, vatEnabled: v })} />
+              )}
+              {org.data?.showServiceOnProduct && (
+                <Checkbox label="Услуга" checked={form.isService} onChange={(v) => setForm({ ...form, isService: v })} />
+              )}
+              {org.data?.showMarkedOnProduct && (
+                <Checkbox label="Маркируемый (Честный знак / Datamatrix)" checked={form.isMarked} onChange={(v) => setForm({ ...form, isMarked: v })} />
+              )}
+            </div>
+          </Section>
+
           {org.data?.showMinMaxStock && (
             <AdvancedSection>
               <Grid cols={4}>
diff --git a/src/food-market.web/src/pages/ProductsPage.tsx b/src/food-market.web/src/pages/ProductsPage.tsx
index 9b84bb0..72d8814 100644
--- a/src/food-market.web/src/pages/ProductsPage.tsx
+++ b/src/food-market.web/src/pages/ProductsPage.tsx
@@ -126,6 +126,24 @@ export function ProductsPage() {
     { header: 'Штрихкод', width: '160px', cell: (r) => (
       <span className="font-mono">{r.barcodes[0]?.code ?? '—'}</span>
     )},
+    // Себестоимость — расчётное скользящее среднее. До первой проведённой
+    // приёмки = 0; в этом случае показываем «—», чтобы визуально отличать
+    // «не накопилась» от «реально стоит 0».
+    {
+      header: 'Себестоимость',
+      width: '160px',
+      className: 'text-right font-mono',
+      sortKey: 'cost',
+      cell: (r) => {
+        if (r.cost == null || r.cost === 0) return '—'
+        const fractional = org.data?.allowFractionalPrices ?? false
+        const num = r.cost.toLocaleString('ru',
+          fractional
+            ? { minimumFractionDigits: 2, maximumFractionDigits: 2 }
+            : { maximumFractionDigits: 0 })
+        return `${num} ${org.data?.defaultCurrencySymbol ?? org.data?.defaultCurrencyCode ?? ''}`.trim()
+      },
+    },
     // Колонка системной розничной цены: заголовок = PriceType.Name той записи
     // что помечена IsSystem (если пользователь её переименовал — заголовок меняется).
     {