Not impressed with quality.  At first everything seemed great, arrived nicely packaged with all the hardware separated out, but then I actually started assembling the freaking thing.  

Some of the screw holes were drilled too big and so the cam-locks didn't fit properly, meaning the two pieces of the base were loose and wobbly.  In addition some of the visible edges don't have veneer over them and so you can see the plywood core which ruins the look of the otherwise nice dark gray finish.  

Of the three cat towers I bought, this was by far the biggest pain to put together and the cheapest looking, I'd pass on this one.