I bought these for my '11 Sahara, but only installed the front ones. Rear splash guards are still in the box. The front ones were on for a week, but since I'm getting a lift, went ahead and removed them. They are in great condition. Never got a chance to install the rears.
The fronts will need 3 new plastic plugs and 3 screws, but not a big deal. Common pieces at any automotive or hardware store.
I paid $90 plus shipping from Quadratec, but I'll sell them for $60 plus shippping via Paypal. PM me if interested.