The tub they are using is high quality and costs a pretty penny if purchased separetly. Heat tape with cord, other materials, building it and time invested. I think $30 is a bit of a stretch..
Of course one can build something similar. I have done it for my Blood. I still had to buy a tub (sterilite) then the heat tape plus shipping. I built a surround for it, too.
Everything is cheaper DIY.
I still think that is a great option for the people that don't want to DIY and want a easy option for a enclosure such as that. Many times tubs/racks are a good choice for snakes, but people that only have 1 or 2, or need to add on to a rack don't want to buy a whole new rack.
Its a "niche" product, but it fills a need and demand. In my opinion..
I have to agree on one part, though. I like see through tubs. But I only want them see through in the front. The Racks "close off" the other sides, the "non open" racks. But I dislike tubs without surrounds that are see through. Way to exposed for a snake. Ideally I would want a open rack with tubs on tracks like this. With good quality solid tubs like this, but the front having a "window". The largest tub they offer is available with window. Wish the smaller ones, or at least the "70" one, would be too. That to me would make this perfect.