Trane extended warranty

I just put a new 13 seer. R-410a Trane heat pump (over and under package unit) on a rental here in Phoenix. It was a very easy swap out for the 20 year old Trane roof top heat pump. There seems to be some confusion on the warranty. I called Trane and they registered the unit and played dumb on the warranty. I paid $2900 cash including tax and all for the new unit. My sales slip says 5 years on everything including labor, and ten years on the compressor. You can't even find anything like the one I bought unless you go to the American Standard website. They have a package heat pump that appears to be the unit I bought. I called a reputable dealer for Trane and they told me that to insure everything including labor, it would be $700. Do you think it would be possible to cut a deal for that warranty with the young guy that sold it to me for $350. or so? The warranty on the look alike American Standard heat pump is one year labor and five years on parts. That is what the Trane company told me the warranty is on the one I bought. The Trane corporation was not terribly helpful or reassuring. Does the young guy that sold me this thing have a big mark-up in the Trane warranty to share with me?