This dealer is jerking you around.
I bought a leftover 08 Sprint last February. The dealer quoted me his lowest price, then took the $650 Triumph rebate off of that. I did all of this through email, by the way, since this dealer was 75 miles away, and it was nasty cold last February. On top of that, he delivered the bike to me by enclosed trailer.
If I were you, I'd let my fingers do the talking with other Triumph dealers within a reasonable distance from you. You can always get the bike serviced at the closer dealer. Triumph pays for your two year warranty work, if needed, at any Triumph dealership.