H and I go to a lot of live music events and we buy the poster if we liked the show and the poster. We have those framed and they cover the walls.
I am thinking of doing this.
I have a number of Weezer posters done by Jermaine Rogers.
Totally do it. I feel like they're so personal and everyone always says they're so "us". Frames have run me about $100-150 each (none of mine are standard sizes where I can buy pre-made frames), but buying something you might be meh about or not like in a few years would be just as much.