^^^ What this guy said.
All those listed above are not detail shops. They use poor quality chemicals, equipment, ect. You get what you pay for, but coming from someone who knows the right & wrongs of Auto detailing I would stay far away from those places. A porper detail shop at a oil change facility around here? unheard of. You get what you pay for. Here is a example(Joke but also pretty true).
The Hack 'n Swirl..........................................................$90 (2 hours)
-Wheels are cleaned using a purely acidic concrete cleaner.
-Vehicle is thoroughly washed using dirty wash mitt and soapy water thats been used on at least 15 other cars.
-Vehicle is hand dried using only the cheapest and dirtiest chamois known to man. Great care is taken to ensure that these chamois are dropped in the dirt at least once.
-After this, one highly experienced crackhead will thoroughly buff your car with a 13 year old wool pad and cheap fill in glaze. Here, great care is taken to ensure that the most evenly distributed swirl pattern possible is left on every panel of your vehicle.
-Next, wax is hand applied using a moist terry-cloth towel that has recently been dropped in gravel.
-Now, your interior will be sprayed with cheap degreaser, pressure washed, towel dried, and covered in armor all to ensure maximum slickness (steering wheel, pedals, and in dash plastics are treated to extra coats).
-Seat belts will now be cleaned using ultra-strength, fiber weakening cleaner.
-Quickly, before the interior dries, silicone base tire dressing is over-applied to the tires, ensuring maximum spinoff - an especially popular option for our white car owners, and windows are cleaned with microfiber towels that have been used by gorillas.
-After baking in the sun, wax is almost completely removed using old bath towels
-Freshly destroyed car is then returned to satisfied, cheap a** customer.