In Houston, they have a place called "the foam store", should be similar stores in most of the major cities. I know someone who makes/made telescope transport cases, he bought foam in size of 2' x 4' and up. I intend to purchase some of the thicker black foam in the near future for outfitting some systainers. Photo attached just to illustrate you can get foam in various sizes and thicknesses, and those shown are not the largest available. Way cheaper than Kaizen foam..... Suggest you google and see if you have a similar source near you, or someone that will ship to your location....