diff --git a/packages/swift-sdk/SwiftExampleApp/SwiftExampleApp/Views/DocumentWithPriceView.swift b/packages/swift-sdk/SwiftExampleApp/SwiftExampleApp/Views/DocumentWithPriceView.swift
index 850adabc68..3c71427663 100644
--- a/packages/swift-sdk/SwiftExampleApp/SwiftExampleApp/Views/DocumentWithPriceView.swift
+++ b/packages/swift-sdk/SwiftExampleApp/SwiftExampleApp/Views/DocumentWithPriceView.swift
@@ -117,6 +117,21 @@ struct DocumentWithPriceView: View {
                     .foregroundColor(.secondary)
             }
         }
+        .onAppear {
+            // `onChange(of: documentId)` does NOT fire when the id is
+            // established as the binding mounts — e.g. PurchaseDocumentView
+            // seeds `documentIdField` in its own `onAppear` and disables this
+            // view, so relying on onChange alone the price probe would never
+            // run and Purchase would stay gated off forever. Kick the fetch
+            // here so a pre-seeded id loads its price without a user edit.
+            // `.disabled(true)` only blocks hit-testing, not lifecycle events,
+            // so this still fires in the Purchase flow. When the field starts
+            // empty (the editable transition flow) this is a no-op and the
+            // existing onChange path continues to handle typing.
+            if !documentId.isEmpty {
+                handleDocumentIdChange(documentId)
+            }
+        }
     }
 
     private func handleDocumentIdChange(_ newValue: String) {
diff --git a/packages/swift-sdk/SwiftExampleApp/SwiftExampleApp/Views/DocumentsView.swift b/packages/swift-sdk/SwiftExampleApp/SwiftExampleApp/Views/DocumentsView.swift
index 7afcbc6b43..dd4ddff535 100644
--- a/packages/swift-sdk/SwiftExampleApp/SwiftExampleApp/Views/DocumentsView.swift
+++ b/packages/swift-sdk/SwiftExampleApp/SwiftExampleApp/Views/DocumentsView.swift
@@ -275,6 +275,10 @@ struct DocumentDetailView: View {
     private var availableActions: [DocumentAction] {
         var actions: [DocumentAction] = []
         let docType = documentTypeRow
+        // `tradeMode == 1` is DirectPurchase — the only mode that supports
+        // listing/buying — matching the marketplace gating in
+        // TransitionInputView (`$0.tradeMode == 1`).
+        let tradeable = (docType?.tradeMode ?? 0) == 1
 
         if ownerIsControlled {
             actions.append(.replace)
@@ -282,12 +286,18 @@ struct DocumentDetailView: View {
             if docType?.documentsTransferable == true {
                 actions.append(.transfer)
             }
-            if (docType?.tradeMode ?? 0) > 0 {
+            if tradeable {
                 actions.append(.setPrice)
             }
-        } else if (docType?.tradeMode ?? 0) > 0 && !nonOwnerControlledIdentities.isEmpty {
-            // Not the owner, but the wallet holds another identity that
-            // could buy a for-sale, tradeable document.
+        }
+        // Surface Purchase whenever the doc type is tradeable and the wallet
+        // holds a controlled identity that isn't the owner (the buyer ≠
+        // owner, and the buyer signs). This intentionally also covers a doc
+        // owned by another *controlled* identity — the two-identities-in-one
+        // -app flow — not just externally-owned docs, matching the doc
+        // comment above. The Purchase sheet resolves the real on-chain price
+        // / for-sale state and disables the button when it isn't for sale.
+        if tradeable && !nonOwnerControlledIdentities.isEmpty {
             actions.append(.purchase)
         }
         return actions