I've been researching car prices for GXP in Texas, and will say the GXP is around $25-30k for a decent one for a friend. So for the dealer to make money, I see them offering you what they did. you can probably get a little more out of it, but definitely not over $30k.
2015 SS, Heron White, A6, Spare and Roof (#508 out of 3144, #41 of 277 optioned) 336rwhp 341rwtq dynojet stock @ 570 miles
2000 Toyota Camry LE, 2.2L (Beater for bad weather)