Edelbrock AirGap question

A friend of mine bought a 69 396 Chevelle and had Motion tune it up for him. He said it made a tremendous improvement in it running, but with other problems with the car didn't keep it long. Don't remember a lot of what they did, they rejetted the carb and probably recurved distributor. Back then we had all to do to make car payments and insurance so not much left for hopup mods. $3000 - 3500 for factory muscle car made it affordable for those of us not too well endowed with money. I bought my 68 Road Runner while still in the service, paying $90 a month for it and making $180 a month.
Hey Tony... do you recall what your friend paid for a tune up?

I do not want to dive into doing one on my own. I have a local mechanic that's good and honest (hard to find now-a-days) and I would like him to do the tune up. I understand that the cost depends on how much needs done. I'm thinking the following: plugs replaced (wires are fine), points, distributor cap, timing. Depending on the condition of the carburetor, maybe have it serviced. The entire (rebuilt) motor only has about 12,000 miles on it. Everything looks brand new! I was just trying to get a ballpark figure. It's a 1972 Duster 340. Thanks!