Did you know brands will make specific Costco versions that are meant to mimic the expected item but be slightly modified to use cheaper parts or less material.
The opposite for food products. I've heard from people who supply Kirkland-branded stuff, and with the level of requirements put on it, those same people have no problem at all buying there.
About the only thing they are good for is carbon copy paper. You have to press hard to make it work, and better pens tend not to like being pressed hard.
It's also a use case that's almost dead. Writing checks is a rarity, and most people only come across the odd contract like that once every few years, at best.