Well first Bose does have a guarantee I think so see if you can't claim that. Just tell them you are dissapointed in the speakers.
If that doesn't work. Ebay'em Bose marketing will get you some cash. That alone should pad your budget more.
At that budget if you want a quick hit check out the EMP's on audioholics store. Great bang for the buck. If you are looking for small speakers like Bose then go to accessories4less and look at the KEF series. They have an iQ series which is very nice and the eggs have great sound for the size and looks. Plus they have that cute factor. I would recommend those 2.
You can also consider putting together a Beta series off ebay and then spending the rest on a projector/ps3 combo.