NEW CAT TREE/Litter Box System

I adopted a cat and then I ordered this cat tree for him and I guess I don't know what I was thinking, but they're obviously is no one size fits all unless you get humongous which I did not so he he couldn't fit in this. I would've had a cut in half so this is never been used by him now. The litter box system cost me like $75 and I love it Except that he really I bought it from my friend. She paid a lot more than that and I paid 75 for it he wouldn't use it. He was not fond of the thought of the litter pallets whereas I have three friends that do use it. They just don't want a second box. I'd love to sell both at the same time I wound up with a dog. My friend passed on and begged me to take her dog and now I have a dog so I'm not going to be getting a cat again.