Don't have plush carpet mats, but did buy from Newport Lexus for $120 a set of all weather mats, and they are as nice and sturdy as the rest of the car. A parts consultant (they do not have an obvious parts department like we see at other car dealers -- they direct you to a phone for info, then a man can come out with parts in stock, which you can inspect while you down latte & gooies) came out from a secret door to the reception area (with grand piano and grand fireplace) and discussed the "special order" of things like this. And voila the mats came wrapped a few days later. When the mats arrived, a guy installed them for me even and washed the car for free! Fancy that! Best $40K for a car & lifestyle I might have paid recently??!! The last Mustang conv. purchased in October '10 from San Juan Capistrano cost more, but the service desk is in a shabby trailer with '70s-style sculptured carpet and their computer monitors are CRT.
I bought them, but they are sooooo nice that I don't want to wreck them by putting them into use! I worry about scuffing up the brushed metal name plates! (I'm a bit OCD, so you have to excuse me) So, for now, they are in storage and I am using the stock ones. Once they wear out, or get ruined somehow, we'll see!
I have them and HIGHLY recommend them! They are heads and tails above the stock mats. They also vacuum up very nicely. If you want to save more than a few bills get them at CT Chat. That's where I got mine and I've never looked back.