We only get about one device a week through mail. Usually macbooks for chip repair. Most customers are local.
Windows 8.1 update is a huge cashcow atm. It breaks drivers in a way that most people can't fix. Lots of people still get really nasty boot viruses and browser hijackers that shut down everything and require quite a bit of work to remove. Nobody does backups, so data recovery from drives with broken file allocation and partition tables is a thing. Most data is really easy to extract even with just basic gnu utils and we do that for a fraction of the price everyone else charges.

We get about 5 customers a day who ask for phone and tablet related stuff, so we decided to just put that on the web page and we'll start accepting those and we'll just hand them over to someone who has experience for now and see how it goes.
We can wall off the extra 270ft² of store space that we don't use and put a separate retail business in there. We're not sure for what. e-cigarettes can be sold at a hefty profit margin, but they require a license for the liquids that contain nicotine. We're looking into that.

The website I found out is constantly maintained and optimized and it costs us $300 a month. Given the excellent results I'd just let them get on with it. If we could get top search results for iphone and tablet repair as well, that could be massive.