I went into a computer shop to get a USB cable as I had bought a wireless printer, which naturally didn't come with a USB cable (wireless, innit?) but needed one once for the initial setup. I was fully expecting to pay about a quarter again the price of the printer, as I didn't have time to wait for a £1 one from an Amazon trader or fleabay.
So imagine my surprise when instead of pulling out some nicely labelled oversized bag, the guy in the shop pulled a slightly battered cardboard box out from under the counter, shuffled around, pulled out a cable in cheap cellophane and asked "Will that do?"
I can't remember what he charged me for it, but he instantly became my first recommendation for computer repairs.
A) because he was honest enough that I wouldn't expect him to fleece customers
B) because he clearly had a successful enough business that he didn't feel the need to fleece customers on the day-to-day stuff.