Prove it and you can get UDC prosecuted for price fixing.
My personal theory is that everyone that kept discussing AE Bike’s prices ad infinitum (KH from AEBike) finally caused the price difference to appear on someone’s radar. If that someone was AE Bike, who realized that they could make more profit, then everything’s fine (legally, but you may not like it). If it was UDC or Kris who “brought the difference to their attention”, then, depending on exactly what was said, it could be price fixing.
You might as well give up on trying to prove anything; it’s too small a business circle, though Kris’ post on the “problem” with AE Bike’s low prices wouldn’t look good in court – that post was a severe business mistake in my opinion, especially given the price change immediately afterwards.
So perhaps there’s a life lesson for the younger set in this – if you find a great deal by all means tell others about it, but keep it low-key. I fear the constant waving of the flag on this one spoiled it for everyone.
Nah, when I was a teenager I wouldn’t listen to anyone my age either… 
Roak