I purchased an oil change through groupon for $18. I called before I bought the groupon online and inquired about the cost for synthetic-blend oil, which my car requires. I spoke with Dawn and she told me the TOTAL would be $28. An extra $10 seemed reasonable for a higher grade of oil, so I bought the groupon. When I went to pay for the oil change I was charged $29 in addition to the $18 I had already paid online, thus, I paid $47 for an oil change! I expressed my confusion and displeasure over the price and was offered....an apology. I have owned my vehicle for 3 years and have never paid $47 for an oil change - congrats on swindling me and losing my business permanently. I will be sure to warn others of the disservice I received at Good Works.