I haven't bought anything brand new or very expensive in quite some time. Most of what own requires a lot of TLC and heavy filing when I get it.
I also occasionally need to move the bindings since I have smaller than average boots/feet. I'm pretty good with my hands and tools. I don't own any fancy equipment, no jigs, etc. I simply clamp the binding plate where I've determined I want it, place some tape on the drill bit to mark depth and tap the sucker and mount them with a screw gun-filling the old holes of course. I'll shoot some epoxy in with the screws if it is a foam core. I haven't drilled through a ski since I was about 13, or have a plate shift on me-but I know my luck will run out again eventually. So far, so good, they are all much straighter and square than the examples of "bad" shop work folks post here.
I file everthing flat checking with a metal scraper and do the sides as close 90* of the bottom by hand, again with no special tools-
:I can hear the groans most of you about not using a file guide here LOL. I run a stone flush to remove burrs, very slightly detune front and back 5%-10% if the ski is not shaped or I plan to use them in bumps. Next mark any gouges that look deep enough for P-Tex to fill and light it up. Scrape the P-tex flat with a metal scraper and use it agian to check to be sure the base is flat and not base high anywhere , otherwise file that sopt(s) more. Then, I hot wax them. I don't scrape the wax until the day I ski, usually in the parking lot-unless I've totally guessed wrong on the temp. If so, I'll scrape it thin and drop something to compensate with an iron and smoothe it out again.
I've resorted to a few seconds with a belt sander and fine paper a handful of times to save time. But, if a file won't remedy the problem the ski is probably even too burnt for me.
Now, if I spent over $300.00 for a pair of skis I would certainly pay the shop mount them. Everything else I would still handle myself.
All my skis hold an edge really well IMO-which is all that matters to me. I can ski ice just fine. But, I totally understand why most of you take "the precision" to a much higher level than I do when maintaining your skis. Beleive me, when I lived closer to the skiing terrain and skied everyday I felt the same way. Not that I'm over 40 and ski recreationally mostly I'm just not as motivated to spend a lot of time to get them "perfect". If I were competing at any level beyond NASTAR I would invest more time and money in my tuning operations and equipment.