Being that I work for the 3rd largest pet supplier in the country, I've delivered a boat load <litterally>, of cat condo's. They are poorly constructed and cost an arm and 4 legs to buy. Just a cardboard tube or several, some scrap chip board, carpet remenants and a ton of staples. Those one's we deliver can make you bleed thanks to all the staples. You can build one of those for free with just a visit to the dumpster behind the carpet store. We have one's that are darn near a thousand dollars! Your's looks just as good as the $200 ones and appears more structurally sound. Congrats to you! I don't know why people buy these condo's, but even worse is the people that buy pet strollers and gravel. How about let the darn dog walk, that's why he has four legs, and when I was a kid, I just went to the beach and scooped up some gravel. Oh...how about some gourmet 4 course microwavable pet dinners, lol. Seen it all, I best stop now.