When I look for specialized electronic equipment that I don't want to spend a fortune on I go straight to eBay. There are lots of companies in China and Korea that make things like that and you can pick them up for a fraction of the prices you'd pay anywhere else for them.
Sometimes the quality isn't great, sometimes it's pretty good- it's the luck of the draw, and you can't count on any kind of warranty, but for 1/10th of the price it's often worth the risk.
Def