I bought an A-Bike Plus direct from Mayhem in October of 2009. It was immediately apparent that thing was poorly made:
- handlebars wobbled due to out-of-round holes for the pop-in buttons
- seat stay wobbled due to bottoming-out of bolt in nutplate
- steering was so stiff as to make riding dangerous
- right pedal was cross-threaded into crank, leaving it covered with metal filings, very loose and unable to tighten.
After several requests, Mayhem finally sent a return authorization and I sent the bike back to the UK at a cost of $80. It sat at the Post Office there for two months, while Mayhem repeatedly refused to accept delivery while claiming no knowledge of it. Finally, the British Post sent it back to the US, and I had to ransom it back from the US Post Office in March 2010 for an additional $50.
My conclusion: there was absolutely no difference in quality between the "genuine" A-Bike and some cheap Chinese knock-off. Since Mayhem won't back their product anyway, save your money - if you must have an A-Bike, buy the cheapest eBay crap you can find. There's hardly any difference...
-Steve