How cheap do they need to be? You can find surplus lots of real-deal C&K mini dpdt toggles on eBay for about $3 per switch. If you need 100 of them, then yeah, that $300. But maybe you don't need that many, or you're willing to spring for it. C&K are awesome (which is why they are usually more like double that price retail).
I've also had great luck with a seller called megatone_electronics on eBay. He has mini dpdt (not C&K but still good switches), and I've bought a lot of other parts off him - never had a junker yet.
Finally, if you want to go retail, mouser electronics is my fave, but digi-key is also good, and sometimes Jameco will have great deals on
surplus close-outs of really good US-made switches.