Retail pricing is mostly set by the dealers and always includes installation labor, SEER rating upcharges, warranty terms and profit which varies dramatically.
I paid about 14k for two bryant/carrier heat pumps in 2001 with the FV4A variable speed air handlers, all ductwork, external temp sensors, humidistat type thermostats and manually adjustable duct dampers in all ducts, I think they are rated at 14 seer with the variable speed. One is a 3.5 ton and one is a 3 ton.
This was a very good price at the time, regular pricing was probably around 19k for all of the above at that time around here.
What size unit are you getting?