Do you want an automatic watch or does this not matter? (I am assuming automatic at this point but if it does not matter I have some other recommendations. Do note that if you buy an automatic, it will need to be serviced periodically.)

Automatic Seiko divers are exceptional products. I have an SKX-007 and Stargate that I absolutely love. Both have been replaced with different models but Seiko divers are still stellar, and they have product lines starting as low as a few hundred bucks. They also offer numerous models with automatic movements that aren't divers, some of which are very nice for an affordable price.

Orient, Bullova, Hamilton, and Tissot all offer some reasonably priced automatics that are well made. Longines is a bit above your price, but they make outstanding timepieces and are solid watches to buy used.

A bit above that and you could get a used Oris. I would recommend reading about their products. Their style is a love-or-hate but they make some awesome watches and are a stellar company with a huge presence in the watch community.