NADA Guide is your friend. While their used pricing is sometimes pie in the sky they do list the MSRP of each unit. Pricing of the bare unit, no options checked, on the Dallas series shows the Elite Suites MSRP to be $161k and the Mobile Suites to be $131k. While that isn't the list price of your unit as most have options it's a good starting point for comparisons. Contact DRV and get a list of the standard features and the options for that year then you can see what has been added to the USED unit you are looking at.
The Elite Series shows a price range for a used unit to be $99-120k depending on condition AND plus any options on that unit.
Interesting note is the Elite series is 2k lbs heavier than the MS series. They also have floor plans etc. www.nadaguides.com
