Guys I just have done fucking math

I couldnt tell how excited because when I go to the shop to look how much a platoon worth I was expecting 5990 platins for each of them but when I look to the centurion I saw 3990 which means I can buy 3 tanks (2 of them are vidar and object) so I am asking you guys to give me a third tank(I have bmp and not going for Churchill)