Prices are always comparable to your typical Exxon or Shell station. If near Matthews it's best to utilize your membership and purchase gas here as it's decent gas at a decent price.
We tend to plan our Costco shopping trip around our gas need only if we don't go to SC for gas beforehand.
The customer service at the station is pretty legit, I've had some exceptional people working on days I've visited and I've had some people who barely want to be there and just there for the check with no personality at all but all in all it's good for what it's for = GAS.