Gerardo, Thanks for doing the right thing and giving us a heads-up. While you can see that many of us have already worked this out, and exhaustively research prior to purchase, your post serves as a timely reminder to those who aren't so particular. There are options for you under common law, and many of these have been addressed in this thread - so over to you - if you choose to do nothing, then that is your call, but me, well I would 'climb into 'em'. Bottom line - thanks for exposing your "stupidity" in a public forum - that is always hard to do, and thanks for reminding us that the buyer should beware. If you have an instrument in your hands prior to purchase then you avoid all this drama - try before you buy - or be prepared to lose the money. That being said - Well done, I hope you have a positive outcome.