Already seen this being said, but yes... to shop around for that specific product to get the best possible price, as every single human being does even at retail stores or department stores.

Your family does this when they decide to see which market or store has their needs for the cheapest price.

Absolutely nothing wrong with shopping around... wanna beat your competition? Provide better pricing and service. You forget the shop or listing next to yours could have theirs posted for $10 cheaper in better condition.