Has anyone bought speakers off Ebay? The auction says "brand new in box" and I am wondering if it's worth the risk. I've heard that they don't have serial numbers on them and that's a huge problem -- but I don't know for sure. The auction also says that they have the FULL WARRANTY with them, which I find hard to believe. How does the warranty work anyways? Through Focal, right? I just send in the S/N to them or something? Here is the auction if you would like to take a look at it.... http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=1396151840 Thanks in advance for any info you guys can provide.