Costco in Charleston has a different feel from other Costcos I've visited. It feels like vacation at the beach. I've never noticed this golf set or these kites in my local Nashville Costco.
Charleston Costco is close enough to the airport to do a final rental car fill up (which is why I was there).
I didn't have room in my suitcases for purchases, but I grabbed a pizza slice and mocha freeze for an inexpensive lunch.