Here where I live, Bosnia and Herzegovina, that is Eastern Europe, we have tons of FSU cameras. Prices from 5 USD to 50 USD (depends of accessories included, camra with one lens are up to 25 USD). Hey, my mothers brother once buyed secondhand lamp on flea market and seller gave him Smena 8 for free. My friend bought Smena 8 for 1 USD. For those prices I would buy several of different cameras, use ones which works, and when those are broken I would buy another one(s). I don't see need for long discussion about this issue.
Of course, I dont know, maybe in USA or Western Europe those cameras are more expencive. If that is case, one year make your hollydays in Polland, Czech, Bosnia, Hungary, Russia, Romania, etc... and get some of those cameras cheap.