well if got building skills a screw gun, tape measure, and a either a table or cicrular saw can build a rack cheat. ( built an 8 shelf rack that holds 16 tubs ( up to 40 quarts )( 2 per shelf) I build mine so the lids are staying on to keep humidity up.. I love it ( wish I had painted the piecess first)

I thik I spent like 300 bucks on it ( without heat ) but I can hold 16 snakes easy Iplusi can use any tub with lid that up to about 7.5 inches tall. and 28 inches deep. I could prolly use larger tubs if i ihad gotten the thicker wood to use for shelves instead of 1/4 inch think.( thick wood would raise price) but for a simple single tub per shelf rack prolly can build it for 200 or less since would not 4 ft wide shelves.
I find my self built ones are great cause I can assemble in the room with out needing to strain to pick up large racks or worrying about breaking the plastic one any if I happen to dropp it or trip while carrying it. ( done it once)