Where to get a passenger side power mirror?

My 2001 Cherokee Sport has power mirrors. The passenger side is broken (mirror itself - the mechanism is fine). Where can I get one for a reasonable price? Do I need to replace the whole thing, or just the mirror itself (it just snaps onto a stud inside the mirror housing)?

Thanks

Mark

There should also be a glue/epoxy on the back of the mirror. (I pulled off my DS trying to get off a blind-spot mirror, didn't break! lol)

Just call some local junkyards for avialabillity/prices..