eBay is the biggest Jumble Sale (US readers - this roughly means "Yard Sale"), in the world. I'm doing a bike project and have found it invaluable... I buy something used and then as sometimes happens and it doesn't fit I can just resell it; Obviously you'll lose some money if you do this with new components but with used you should get about the same for it - sometimes even make a tiny profit. So why not get a few different bars for cheaps - try them out, then if you really like one you've already tested it so sell all the test ones and go out and get a new unmarked version of the one you really liked. Simple!