My son suggested this topic for a blog, so I am willing to delve into it.
We are Sam’s Club members and I appreciate their pump prices when it comes to fuel. The store nearest us is not usually too crowded, especially in the early morning hours when we make use of our business membership from the days of TEAM Marketing. We seem to be able to find what we need there.
I don’t know anything about Costco, so Sam’s Club wins. Easy answer.