after extensive research on the Ebay YES 4yr. for $379, i purchased it. i checked w/ yamaha and they are a legitimate vendor for YES, and also backed by Ebay purchase protection. if i get f**ck'd i deserve it. either way, when i get the genuine paper work in my hand, i will believe it. atleast i'm covered for fraud by Ebay and mastercard. i will re-post results.