This cat tree is a very good price for its size. It's also very soft. I have two cats, one weighs 8 pounds and loves to sleep in the rounded beds, but he's a bit too heavy for them and so it leans over in the process. Not enough to fall over though. He can't fit into the small house in the bottom. My other cat is a kitten so I can't exactly make a fair judgment yet.
On another note, I was sent all the parts EXCEPT one screw, so it isn't even finished yet. Maybe once it's finished, it won't lean over. I also can't request for the screw; I'm only offered a full refund or sent the whole item again. I just want the screw.