Only thing i hate about buyin JL on ebay is i see people sellin the 500.1's and such for like, internet store prices, that have been used for 6 months, which i find kinda cool cause there re-sale value is just so **** good. But a buddy of mine gets his stuff from http://www.funwholesale.com and they have W7's and such for cheaper then any online store price. They just started to carry there amps too $369 for a 500.1. Not entirely sure if u need to be a member though but check it out anyways
JL is very good about tracking their products......if you get it anywhere but from an authorized dealer you will have zero warranty. You have virtually no chance of "slipping one in" on them and getting it warrantied even though it was bought unauthorized.