How much can you deal with a RV dealer on a TM?

Now that we have our TV, I am looking into getting a TM 2720. What is a reasonable price for one with options like swing hitch, A/C, and extra cabinets. What options would you refuse to go without?

Also, if a dealer is offering one for $26K, can you talk them down and by how much? What is the going rate for a TM compared to the MSRP? In particular, how much cheaper should a new 2011 or 2012 at a dealer be vs ordering a 2013 with the same options.