fix(live-room-create): 유료 라이브 30캔 미만 생성을 차단한다

app/src/main/java/kr/co/vividnext/sodalive/live/room/create/LiveRoomCreateViewModel.kt

@@ -28,6 +28,10 @@ class LiveRoomCreateViewModel(
     private val repository: LiveRepository
 ) : BaseViewModel() {
 
+    companion object {
+        private const val MINIMUM_PAID_PRICE = 30
+    }
+
     enum class SelectedMenu {
         MENU_1, MENU_2, MENU_3
     }
@@ -264,11 +268,17 @@ class LiveRoomCreateViewModel(
             return false
         }
 
+        val price = _priceLiveData.value ?: 0
+        if (price in 1 until MINIMUM_PAID_PRICE) {
+            _toastLiveData.postValue(StringResource(R.string.msg_live_room_create_minimum_paid_price))
+            return false
+        }
+
         return true
     }
 
     fun setPrice(price: Int) {
-        _priceLiveData.value = price
+        _priceLiveData.value = price.coerceAtLeast(0)
     }
 
     fun setAdult(isAdult: Boolean) {