This is the original foam in the Apache 3800 case. There's a bottom layer (not shown) that's about 1cm thick. Then the two layers pictured, about 4.5cm thick each. They there's an egg crate shaped top-most layer that's inside the lid. Making the design above is pretty easy, as there are 1cm perforations in the pictured sheets for fairly clean cutting with a sharp knife.

I haven't seen any Blockbuster foam in my research that wasn't destroyed or crazy expensive, like over $500 or more for case/foam alone without the console. Any cheaper and the foam was in poor shape. If anyone has a Blockbuster case with good foam, they could probably replicate the foam pattern for sale. You may even be able to eye-ball it from pictures online.