In the middle of a residential area, we were told this place had been there for a really really long time. Not only does this place do a whole lot of styles of wine, but they do fortifieds too. And they have them in little cask barrals too of which they sell. Not exactly the cheapest on the market, but they're well made and look fantastic.
The guy is happy to have you sample his wares and they're always adding on something new.
Go visit!

Approximate cost: $avg