I got two from the Iwannabuy person on ebay.
-Ordered one...it arrived all scraped up and the brake switch was bad. I contacted Iwannabuy and he was great sending out a new one and let me keep the original for parts.
-So this past Sunday I went to use the first one for mockup and it wouldn't bleed properly. I could get all the air bubbles out but still no pressure on the brake handle and no closing of the caliper. After taking apart the caliper (also an ebay item) and finding that was ok I went to the second Master cyl.
-2nd master cyl bled really fast and I had it working fine in less than 10 minutes.
-I did notice that both of mine have the exact same chip out of the handle...maybe this guy got a bad batch. I have a working one so I'm not ticked but it would have been a lot less hassle just to buy one from someone with better stock.