I've been collecting tiki mugs and such since college (too many years ago to tell you) and I have certain rules. I admit it- I am a snob & can only buy from thrift stores and that sort of thing- and I refuse to pay over a buck or two. Most of mine have cost anywhere from a 10 ¢ to about $2, maybe $3.
It's slow going these days, but they're still out there.
This one is the most recent and cost a buck.
What do you collect?