Just because a person or company imports from China, that does not mean they are going to scam someone. Also, just because a product takes longer than a day to be delivered, it does not mean that it is a bad deal either.
There are many good reasons for ordering rather than taking just what is availble.
The importer of the bikes probably did lose his shirt, as it happens often, if they do not take all the possibilities into consideration. That is just part of doing buisiness. If he was in the U.S, he had a very good reason to follow through with the deal, win-lose-draw.
The call it fraud, and unless he was in your state, it then becomes Federal and the Feds take that very seriously, especially if you used the postal service.
The seller on EBay keeps getting kicked off (suspended) and they keep coming back under a different name. Now these people are outside of the US. If they do not follow through or do noty tell you everything there is not much a buyer can do.
A word of caution to everybody that is buying anything. ALWAYS MAKE SURE YOU HAVE A SALES CONTRACT! If you do not, then it could be buyer beware.
Funny thing though...people still see that 3k for the unit and the 3k for the shipping and they are still after the deal. Oh well, what can a person do....you can't save those that do not want to be saved.