The dealer prep is surely a profit pad, but I've really been astounded at some of the anecdotes posted about no prep dealer prep at delivery. We bought our TT from an RV One dealership. On delivery day, we were taken to a 'delivery pad' where the trailer was set up, all utilities and sewer connected, even the fridge was chilled and AC up and running. We were shown every detail, the operation of everything demonstrated. The trailer was thoroughly cleaned inside and out. Time spent with us was 5 hours, another 45 minutes going over the WDH after the truck was hooked up and the hitch adjusted to the the trailer. Very thorough and well done.