KTMATVHQ CP Piston Group Buy Info

I am interested in doing a group buy for CP pistons. The minimum order is 5 per custom piston and they must be prepaid for. Below are a few possibilities:

450cc (89mm Bore)
12:1
12.5:1
13:1
13.5:1
13.75:1

525cc (95mm Bore)
12:1
12.5:1
13:1
13.5:1
13.75:1

540cc (97mm Bore)
12:1
12.5:1
13:1
13.5:1
13.75:1

I want to hear everyone's thoughts...