The price I got from the Lexus dealership here in MA is $220.00. I thought it wasn't a bad price. I did specifically ask the service manager if they at Lexus will install it or hire someone outside to do it. He said they have someone their that will install it it. Now that I think about it, I'm not %100 sure that this will be a Lexus service tech or someone outside.
I'll have to check if they warranty this for any future problems. I'm sure they do, but you never know. :)