price is really going to vary with what has to be done to whatever component is actually bad...
Just dash removal and getting the HVAC box out alone with evac and recharge for the AC is almost 800 in labor. Then factor in the extra labor for whatever needs to be done, cost of parts, tax, etc.
It's really not that bad to pull the dash yourself, but I do it professionally so my opinion on ease of doing something is worthless to someone outside a shop.
In a shop with all tools needed, and air and power tools, flying blind having never done one before, I did an evaporator in a durango in about 7 hours but that required removing the front seats and center console too. Its nothing you cant do on a saturday in the backyard.