Cribs was at its best when it was some newly rich musician living in a boring suburban neighborhood and they had basically nothing in their house except some weird piece of art that cost 300k.
FWIW he justifies it further here: part of his job, as he saw it, was to show up in public looking like a guy who could afford brand new clothes whenever he was seen, and he had a public appearance of some kind every day. The interviewer also mentions at the start that it came up in his episode of Cribs, so I'm pretty sure that's the one you're thinking of. https://www.youtube.com/watch?v=DEQvb6hCtog