When you get the receipt back, you can request an item be cancelled because you "didn't take it". They will pretty much accept it, no questions asked.
One journalist tried and failed but I think two experts people working in concert might have a better chance. It would probably relate to tricking Amazon that you put an item back.
Yes. Of course it is. I think they are not stupid either and very well know that it will happen. The first on the market has to do the experiments to get it right.