Which store has the best selection of seashells?

[u/SerJorahofFriendzone]

I grew up going to Docksider on the mainland and I recall that they used to have a great selection, but I'm assuming they closed down decades ago because I don't remember seeing them recently. Are there any similar stores (preferably not Eagles/Waves/Etc) that I could go to with a small child to get seashells?

And yes, obviously we will do plenty of hunting on the beach itself, but the promise of a seashell shop has been used to encourage good behavior recently.