The msrp for the parts are listed in the "official" H/D P&A catalog. Some dealers charge over msrp. However, some other dealers offer small discounts. 10-15% is not uncommon. The hourly shop rate for labor varies from shop to shop and around the country. Was in a H/D shop yesterday and the hourly was $75/hr. Ouch!
Larry tell us he did the work himself with a parts costs of $350. If ya' have the tools and some mechanical ability, you can do the work yourself. For those of us with no skill, we'll go to the shop! Our Forum techie experts will be able to tell ya' the number of shop hours involved to install a Stage I upgrade on a Sportie. I'd guess about 1 1/2 to 2 hours of time is involved.