I have a 15yr old GMC Sierra 2500HD and think maybe Ill buy a new truck. What is everybody seeing in terms of discounts to MSRP? THE MSRPs Im seeing are around $90,000. Obviously, MSRPs vary a lot. What %of MSRP is considered a good deal on a GMC Sierra 2500HD??? 90%, 87%, 85%???? When I bought my truck 15 yrs ago, I believe I bought it around 90% of list. Thanks