That's the business model of Costco across all departments, they don't offer much selection but everything in the store has a local maxima of value for the mone

That's the business model of Costco across all departments, they don't offer much selection but everything in the store has a local maxima of value for the money. Costco gets you the best deal, Walmart and the dollar stores only sell garbage at the lowest possible cost, Amazon sells literally everything and has converted over the years from having the best deals to having the fastest logistics, and then there's whatever niche specialist suppliers are left like digikey for electronics parts etc.