Eric, There's always lots of MT500's on Ebay. Just a word of advice: you'll have to spend a lot of money to put crytsals in them, typically around $75 a set. And, if you buy the "cheap" crystals, they won't work. I know... (also, don't spend more than $50, and only if it is in "excellent" condition.) 73, Jack WA2HWJ