Corky…you can have one for the low, low price of…lol. If you know anybody with woodworking skills, it wouldn’t be too hard to make one for yourself. You can tailor it to fit your equipment. I pirated the casters/handles and some of the twist locks from a previous case, but all totaled, it only cost me about $150.00 to make.
You could go more costly and order all the channel and stuff from a place like https://www.parts-express.com/, but I went to Home Depot for everything except the twist locks and the handles. I plan on a coat of Duratex later on, but for now, I rolled on two coats of Rustoleum truck bed liner on the exterior and just flat black for the interior.