[PCB] V-Cuts relatively expensive

I ordered a PCB with 8 x the same design on a 10x010cm PCB. When I started the quote it is 5 US$. However once I add V-cuts (one vertical and 3 horizontal) the price goes up to 46US$. Because it is seen as a panel. Why doesn't PCBWAY add this info on their site. This is very confusing and disappointing.
Ranking Name Answers
1 PCBWay Support 2
2 P****ita 1