its not that great since if an average person buys them they only buy like a couple, usually for a favorite show or character then ignore. the rest rots on shelves. "funko collectors" are probably not too common.

currently, pokemon is eating up all the attention from funko, labubu (failed) and sneakers. but.. even then pokemon will have a lull period where value drops by 50% for a few years. then maybe goes back up 200% after some event.