Purchasing new TT, what can I get them to throw in

Not sure if you have power tongue jack or not, that was a show-stopper for me. I also asked for full propane and sanitizing water system, so I could go out in trailer immediately after purchase. I negotiated a roof treatment for spring following fall purchase. Dealer also installed for free the things I purchased in his shop the day I signed the papers.. put in roof vent covers and a large level on front so I can see if trailer is level (side to side) from truck.