I do repairs on electronics and sell them. I started because repair prices these days are outrageous, and I can do it much cheaper, even for my customers. I can't keep up to my orders!
Repairs are generally super easy. A complete teardown and replacement of a battery, front digitizer, back glass, and miscellaneous screws in any given phone takes about 20-35 minutes. Usually I do 5-8 at a time.
The magnetic mats you guys sell are too small. It would be nice to get an 8' x 4' matt for an esd table.. That would make it much easier!