Well, if there are thousands of sex shops everywhere so I’m sure you can find one locally that wouldn’t be more than 20 mins away from you.
But if we’re talking online…
Adam & Eve is popular and probably one of the oldest online stores. They sell both high end and low end so do your research before you buy something because you don’t want to get stuck with something crappy. The prices are decent and you get free stuff!
My Pleasure has been highly publicized in major magazines. They’re just about the toys and don’t really venture into any other items you could use for sex (ie. a swing). They offer good products.
Good Vibrations is well known and its been around for a while. They’re a little pricier, but they offer a lot of the original versions of products instead of knock offs so there’s something to be said for that.
Liberator has a lot of stuff, haha. They also offer more unique items that you can’t get on other sites. So that’s their biggest niche.