This is not a bad kit for the price. It does take a long time to build, and there are no directions. There are directions on how to make several smaller structures, but i built the large one on the picture just by site. It also does smell pretty awful, like a cat already urinated on it several hundred times. It also is put together a little strange, some of the piece are velcro some are sewn. Not sure how durable it is, or how well it it will hold a heavier cat.   

Pros: inexpensive
Cons: smells, not durable, complicated to put together