Thanks for your response. Based on cars.com asking prices, it seems like a fairly good deal, as most of them on cars.com have more miles, were damaged/have questionable histories, or are priced $1-1.5k higher, but it's of course tough to tell how much room the various sellers have in their asking prices. What makes this (I think) a potentially good deal is that it's CPO. I'm hoping some people can give me some actual sale price comparisons.
E60 M5 (LCI) - SMG | Black Sapphire | Black Full Merino | Aluminum
E92 335i - 6 Spd | Black Sapphire | Saddle | Burl Walnut | Premium | Sport | Nav | Comfort | Heated Seats | PDC | Rear Sunshade | iPOD [Retired]
E53 X5 4.4i - Highland Green | Truffle | Burl Walnut | Premium | Sport | PDC | Cold Weather | Heated Steering Wheel | Rear Climate | Sirius | Hitch [Retired]
E36 540i - Black | Burl Walnut | Premium | PDC | Cold Weather | Heated Steering Wheel | Rear Sunshade [Retired]