Well worth the money spent.
PROS: Looks nice. Very easy to assemble. Seems sturdy. Cats like it. Love sisal rope on support columns. Good price while on sale but would be disappointed if paid full price.
Cons: Wood is a little cheap & thin. Arrived with one badly cracked piece. Covering is fairly thin blanket type material. Hope it holds up to use. Stairs only held on by single small metal bracket causing it to swivel to the side occasionally. Would have preferred 2 brackets to hold it steadier. All horizontal surfaces are kind of small for lounging space. Seems a bit crowded for playing & jumping between surfaces. Upper 3 platforms are kind of small for large cats. They hang over it on all sides while sleeping. 
Despite it's shortcomings it seems to be a satisfactory product.