Some places are cheaper than others, but most hold pretty tight to the selling price. You can NORMALLY get things thrown in. Like extended coverage (5 years if you go to the boat show for example), maybe some life jackets, that kind of stuff.
Or, do like I did, but from a shop that buys shops that are going out of business. I go my 2 skis, both new never titled (2009 RXT-X and 2010 GTX) in 2011 for 20 grand with a trailer.