diff --git a/app/Http/Controllers/Sales/SalesContractController.php b/app/Http/Controllers/Sales/SalesContractController.php
index acbb91c2..f1ed494b 100644
--- a/app/Http/Controllers/Sales/SalesContractController.php
+++ b/app/Http/Controllers/Sales/SalesContractController.php
@@ -24,7 +24,7 @@ public function saveProducts(Request $request): JsonResponse
             'products' => 'required|array',
             'products.*.product_id' => 'required|exists:sales_products,id',
             'products.*.category_id' => 'required|exists:sales_product_categories,id',
-            'products.*.development_fee' => 'required|numeric|min:0',
+            'products.*.registration_fee' => 'required|numeric|min:0',
             'products.*.subscription_fee' => 'required|numeric|min:0',
         ]);
 
@@ -45,7 +45,7 @@ public function saveProducts(Request $request): JsonResponse
                         'management_id' => $management->id,
                         'category_id' => $product['category_id'],
                         'product_id' => $product['product_id'],
-                        'development_fee' => $product['development_fee'],
+                        'registration_fee' => $product['registration_fee'],
                         'subscription_fee' => $product['subscription_fee'],
                         'discount_rate' => 0,
                         'created_by' => auth()->id(),
diff --git a/app/Models/Sales/SalesContractProduct.php b/app/Models/Sales/SalesContractProduct.php
index 1158c34e..0a49b66c 100644
--- a/app/Models/Sales/SalesContractProduct.php
+++ b/app/Models/Sales/SalesContractProduct.php
@@ -15,7 +15,7 @@
  * @property int $management_id
  * @property int $category_id
  * @property int $product_id
- * @property float|null $development_fee
+ * @property float|null $registration_fee
  * @property float|null $subscription_fee
  * @property float $discount_rate
  * @property string|null $notes
@@ -30,7 +30,7 @@ class SalesContractProduct extends Model
         'management_id',
         'category_id',
         'product_id',
-        'development_fee',
+        'registration_fee',
         'subscription_fee',
         'discount_rate',
         'notes',
@@ -42,7 +42,7 @@ class SalesContractProduct extends Model
         'management_id' => 'integer',
         'category_id' => 'integer',
         'product_id' => 'integer',
-        'development_fee' => 'decimal:2',
+        'registration_fee' => 'decimal:2',
         'subscription_fee' => 'decimal:2',
         'discount_rate' => 'decimal:2',
         'created_by' => 'integer',
@@ -89,11 +89,11 @@ public function creator(): BelongsTo
     }
 
     /**
-     * 테넌트별 총 개발비
+     * 테넌트별 총 가입비
      */
-    public static function getTotalDevelopmentFee(int $tenantId): float
+    public static function getTotalRegistrationFee(int $tenantId): float
     {
-        return self::where('tenant_id', $tenantId)->sum('development_fee') ?? 0;
+        return self::where('tenant_id', $tenantId)->sum('registration_fee') ?? 0;
     }
 
     /**
diff --git a/resources/views/sales/modals/partials/product-selection.blade.php b/resources/views/sales/modals/partials/product-selection.blade.php
index 34328de1..2ad42d2c 100644
--- a/resources/views/sales/modals/partials/product-selection.blade.php
+++ b/resources/views/sales/modals/partials/product-selection.blade.php
@@ -63,7 +63,7 @@ class="px-4 py-2 text-sm font-medium rounded-lg whitespace-nowrap transition-col
                             <div class="flex items-start gap-3">
                                 {{-- 체크박스 --}}
                                 <button type="button"
-                                        x-on:click="toggleProduct({{ $product->id }}, {{ $product->category_id }}, {{ $product->development_fee }}, {{ $product->subscription_fee }}, {{ $product->is_required ? 'true' : 'false' }})"
+                                        x-on:click="toggleProduct({{ $product->id }}, {{ $product->category_id }}, {{ $product->registration_fee }}, {{ $product->subscription_fee }}, {{ $product->is_required ? 'true' : 'false' }})"
                                         :disabled="{{ $product->is_required ? 'true' : 'false' }}"
                                         class="flex-shrink-0 mt-0.5 w-5 h-5 rounded border-2 flex items-center justify-center transition-all"
                                         :class="selectedProducts.includes({{ $product->id }})
@@ -89,7 +89,10 @@ class="w-3 h-3 text-white" fill="none" stroke="currentColor" viewBox="0 0 24 24"
                                         <p class="text-sm text-gray-500 mt-0.5">{{ $product->description }}</p>
                                     @endif
                                     <div class="flex items-center gap-4 mt-2 text-sm">
-                                        <span class="text-gray-500">가입비: <span class="font-semibold text-indigo-600">{{ $product->formatted_development_fee }}</span></span>
+                                        <span class="text-gray-500">가입비:
+                                            <span class="text-gray-400 line-through text-xs">{{ $product->formatted_development_fee }}</span>
+                                            <span class="font-semibold text-indigo-600">{{ $product->formatted_registration_fee }}</span>
+                                        </span>
                                         <span class="text-gray-500">월 구독료: <span class="font-semibold text-gray-900">{{ $product->formatted_subscription_fee }}</span></span>
                                     </div>
                                 </div>
@@ -155,7 +158,7 @@ function productSelection() {
                 @foreach($category->products as $product)
                     this.productData[{{ $product->id }}] = {
                         categoryId: {{ $product->category_id }},
-                        devFee: {{ $product->development_fee }},
+                        regFee: {{ $product->registration_fee }},
                         subFee: {{ $product->subscription_fee }},
                         isRequired: {{ $product->is_required ? 'true' : 'false' }},
                     };
@@ -167,7 +170,7 @@ function productSelection() {
             this.calculateTotals();
         },
 
-        toggleProduct(productId, categoryId, devFee, subFee, isRequired) {
+        toggleProduct(productId, categoryId, regFee, subFee, isRequired) {
             if (isRequired) return; // 필수 상품은 토글 불가
 
             const index = this.selectedProducts.indexOf(productId);
@@ -185,7 +188,7 @@ function productSelection() {
             this.selectedProducts.forEach(id => {
                 const product = this.productData[id];
                 if (product) {
-                    this.totalDevFee += product.devFee;
+                    this.totalDevFee += product.regFee;
                     this.totalSubFee += product.subFee;
                 }
             });
@@ -201,7 +204,7 @@ function productSelection() {
                 const products = this.selectedProducts.map(id => ({
                     product_id: id,
                     category_id: this.productData[id].categoryId,
-                    development_fee: this.productData[id].devFee,
+                    registration_fee: this.productData[id].regFee,
                     subscription_fee: this.productData[id].subFee,
                 }));