$7,500 is a good budget number for a complete leather interior kit, as long as you are doing the installation. A complete RV-10 interior kit from South Florida Sport Aviation (I have no experience with their quality) is $7,100.
http://sfsportaviation.com/index.php...&product_id=60
The kit includes:
Our full interior kit will add elegance and value to your RV. In this special discounted bundle you get our full line of interior products for the RV-10 plus items we don?t sell separately. All our interior leather products come in two toned gray and tan color options.
Kit Includes:
Carpet Set
Side Panel set
Front Seats
Rear Seats
Center Console (throttle quadrant)
Center Console (arm rest)
Overhead Console
Headliner
Glare Shield
Baggage Door Trim
Seatbelt Guard Trim
Seatbelt Hook
Door Hinge Cover
12v Receptacle Cup
Stick Boots
Stainless Steel Hardware Set