THAT is wishful thinking on his part. I'd suggest you check out www.patternreview.com and enter 6600 in the search box and select sm/sergers in the lookup section (it defaults to "pattern" where the down arrow is) You will see that nobody paid more than $1,500 and the lowest was under $1,000. With the new Horizon on the market, I would negotiate like the dickens.
Does your dealer run specials throughout the year? Good luck.