The job takes 10 to 15 minutes tops, if they want to charge you like 60 to 80 bucks for it say NO and get the hell out of there. 40 bucks is kind'a ok but anything over that is overkill it. LBS tend to charge a lot based in two premises, 1 that they dont want to do the work so you walk away or that they are the only ones that have the tool to do it, thing that is understandable but one thing is to charge 20 bucks per hour for any job and another charge 80 for 10 or 15 minutes.

Wonder if you really need that FF faced, maybe not. From what I have noticed the new UT cups are way more forgiving if the shell is not super perfect, but is always good to do it. If your previous crankset did not give you any problem i dont see why to do it now. Always u can do it later.

As for the shims, well. The last cups editions looks like are tiny wider, i dont know if anybody noticed, they even changed the color to a brownish/greyiish mix.