diff --git a/src/components/MarketplaceItemCard.tsx b/src/components/MarketplaceItemCard.tsx
index 067c5f7..49b203f 100644
--- a/src/components/MarketplaceItemCard.tsx
+++ b/src/components/MarketplaceItemCard.tsx
@@ -26,6 +26,7 @@ import { Label } from '@/components/ui/label';
 import { useAuthor } from '@/hooks/useAuthor';
 import { useCurrentUser } from '@/hooks/useCurrentUser';
 import { useCashu } from '@/hooks/wallet/useCashu';
+import { useUsdToSats } from '@/hooks/useExchangeRate';
 import { useToast } from '@/hooks/useToast';
 import { useNostrPublish } from '@/hooks/useNostrPublish';
 import { useListingReports } from '@/hooks/useListingReports';
@@ -84,7 +85,7 @@ export function MarketplaceItemCard({ item, compact = false }: MarketplaceItemCa
   const { data: trustScore } = useTrustScore(item.pubkey);
 
   // Cashu wallet integration
-  const { totalBalance: cashuBalance, isInitialized: hasCashu, coco } = useCashu();
+  const { totalBalance: cashuBalance, coco } = useCashu();
   const [showPaymentDialog, setShowPaymentDialog] = useState(false);
   const [showReportDialog, setShowReportDialog] = useState(false);
   const [showDeleteDialog, setShowDeleteDialog] = useState(false);
@@ -116,9 +117,19 @@ export function MarketplaceItemCard({ item, compact = false }: MarketplaceItemCa
   // Get price type label
   const priceTypeLabel = item.priceType ? PRICE_TYPES[item.priceType]?.label : null;
 
-  // Calculate price in sats (rough estimate: $1 = 2500 sats at $40k/BTC)
-  const priceInSats = item.price?.amount ? Math.round(parseFloat(item.price.amount) * 2500) : 0;
-  const canPayWithCashu = hasCashu && cashuBalance >= priceInSats && priceInSats > 0;
+  // Sats estimate from the LIVE BTC/USD rate — never a hardcoded constant
+  // (that quoted buyers wildly wrong amounts). Non-USD fiat is left unestimated
+  // rather than inventing a number.
+  const priceAmount = item.price?.amount ? parseFloat(item.price.amount) : 0;
+  const priceCurrency = item.price?.currency || 'USD';
+  const usdAsSats = useUsdToSats(priceCurrency === 'USD' ? priceAmount : null);
+  const priceInSats = !priceAmount
+    ? 0
+    : priceCurrency === 'sats'
+      ? Math.round(priceAmount)
+      : priceCurrency === 'BTC'
+        ? Math.round(priceAmount * 100000000)
+        : (usdAsSats ?? 0);
 
   // Seller verification status
   const isVerifiedSeller = sellerInfo?.hasNip05 || false;
@@ -466,16 +477,10 @@ export function MarketplaceItemCard({ item, compact = false }: MarketplaceItemCa
 
             {/* Action Buttons */}
             <div className="space-y-2">
-              {/* Pay with Cashu button */}
-              {user && !isOwnListing && canPayWithCashu && item.status === 'active' && !isWTB && (
-                <Button
-                  onClick={() => setShowPaymentDialog(true)}
-                  size="sm"
-                  className="w-full gap-2 bg-orange-500 hover:bg-orange-600 text-white"
-                >
-                  🥜 Pay {priceInSats.toLocaleString()} sats with Cashu
-                </Button>
-              )}
+              {/* NOTE: there is deliberately no "Pay with Cashu" button here.
+                  Payments are not implemented, and a button that only shows a
+                  "coming soon" toast is a dead end — buyers contact the seller
+                  and arrange payment directly. */}
 
               {/* Contact button */}
               <Button