Great question — answering as the UphillTech team:
If you break the job down into the number of small operations required, you could do as many of them at home as you are able. The logical conclusion to this would be that you only take the new fork and the old fork to the shop and have them cut the steerer tube to match, install the crown race & star nut. That is very little work. However, when we're talking about disassembling the old fork, headset, the brakes, wheel, then doing the reverse on the new fork, setting up the handlebars, mudguards, whatever, it's all time. And it's all billable!
Full answer by Noise: https://bicycles.stackexchange.com/a/96268 (CC BY-SA 4.0).
Need it done for your business? UphillTech.
