i bought one December 1 2021 for 179 when i was looking for write offs, and thought i would give the fixture table gimmick a go, so they must have jacked the price pretty quickly after you got yours
you could build one for cheaper no doubt, as there is only about 80$ worth in material (assuming you bought a full plate), but then you would need to drill all the holes, buy the accessories, etc. so its probably a wash
either way, better than working on the floor