Hi,
I have to agree with the earlier posts that the interior is very spartan. I also own an ES 330 which I think has a much nicer interior. I think Lexus really blew it with the 07 interior.
I bought the same dash kit. It installed pretty easily. I am very happy with it and my wife is happy. (that in itself is worth $200)
However nothing is perfect. Here are some of the things to consider..
* trim pieces are too thick in my opinion. There is a ridge whereever the trim meets the existing interior
* MOST pieces are about 1/16" too small all around. This leaves unsightly gaps that are visible depending on where you are sitting
* Kit doesnt provide the cleaning pads that the docs refer to. You will have to scrounge alcohol wipes
* Kit doesnt provide enough of the "adhesive promoter". You get 2 small pads that dry up almost immediately so you simply will have to install without it
IMPORTANT TIPS:
* Use a hairdryer to heat up the interior and the new piece you are isntalling. The heat makes the part very pliable and helps the adhesive cure.
* Never apply from the middle out. peel one end, lightly apply it, and the peel rest of protective coating away and slowly tack down the rest. You can remove it carefully if you made a mistake if you are careful and do it immediately
* Check fit before fitting each piece. Some pieces are right size, some seem too small. You need to make sure of the exact positioning to avoid ugly gaps
Good Luck