twas easy, i looked inside my desktop PC, counted surfaces, then measured area of my mom old yamaha keyboard, came up with what i figured was a fair number, and then rolled a pair of D6 for cost multiple. end result: way costly, but worth it for RP purposes. some folks wanted the deck for what it had done (mostly cops and corps) some wanted it for how it looked (definitely custom look and an attention-getter), the rest just didn't want ME to have it.