Because the Sears Auto at Northlake is within walking distance to our house, we tend(ed) to use them. We have been ripped off on several occasions but always have rationalized this by saying "the auto repari business is a sleazy business".
This last event: WE purchased a diehard battery about 2 years ago. The battery died on a roadtrip. WE were able to obtain a jump- and when I brought it back to Sears- the woman stated that since it was running now- "it probably recharged itself" and "we will have to charge you to test the battery". W/O checking she said it was probably not the battery and was most likely the starter or the alternator (a more costly repair- since the battery was still under warranty). She advised that I drive it and not worry about it. Since it could take up to three hours to check the battery(!!!)
We took the car in for a routine check with a legit auto repair place. He changed the oil (really changed the oil, not pretened to as Sears had done two years previously) and when we picked the car up, he said- "just so you know, your battery is about to go".