I ended up getting my amp from my local Lexus dealer. I told them that I found an amp online for $495, and they gladly offered to match the price. Lexus backs the unit with a 12 month warranty. I might of been able to find an amp for less, but I was tired of messing around, I liked the warranty, and I was able to purchase locally.
Thanks to all for you support and assistance!
checked with my dealer and they told me they couldnt get anywhere near the $450 electronics master from georgia was selling it for. it was far below their cost they claim. $720 exchange was dealer price. i ordered mine and should have it early next week. i cant wait to have my music back.