I got one off of ebay recently.. See this link: http://cgi.ebay.com/New-Deluxe-42-Ca...QQcmdZViewItem
But not from that seller, my shipping was $24.99 and I paid $5 for the tree itself, so $30 is not bad.
It's max holding weight is 25lbs, and it is ok in terms of stability. The top platform isn't too stable, but if you put it in a corner or against something (a window in my case) it's not so bad. They cats like it, but no one has used the "house" at the bottom. I think the house makes it more stable, than it would be with just a flat piece on the bottom. The carpet quality is OK, but not great and the tube isn't big enough for them to get in but I do hide their toys in there.
I wouldn't buy from someone wanting unrealistic shipping... If the item is damaged and you have to return it, they won't refund the shipping, only the "cost", so it wouldn't help you to have paid .99cents for the tree, $99 for the shipping and to get refunded .99cents.
I really like the looks of this one (looks solid and big beds for the cats) but not sure how pricey it is: http://cgi.ebay.com/Cat-Furniture-Co...QQcmdZViewItem