I've actually thought about putting an ad in the local paper offering 10 bucks per speak&freak and 15 bucks for sk's, vss's, and other prime keyboards. Probly wouldn't work for things like 505s and 626s in a town of 30,000, but i'm sure that some of the old people in town have old toys from the 80s sitting in their attics.
Better than the alternative. I spent 81 USD and 20 USD shipping for one each Speak& Spell, Read, and Math, two Super Speak and Spells (not very bendable but they came with the lot) and two vtech computers and a bag of components. Individual speak&spells and Speak&reads were selling BIN for 45USD and 35USD, respectively.
Once came across a SK-1 at Goodwill for $2. Didn't get it because it had batteries but didn't turn on. What can I say? I was 14 at the time, no job, no money, so 2 bucks was a lot. Spent it on a Yamaha PSS-6 a few weeks later, one of the best bends I've found.