$200 gig-worthy bassesYou can get a new SX bass for under $200. It
could prove worthy for small gigs, like a coffee-house or small cafe, maybe even an open mic type situation where volume is not important. It can be upgraded to a truly gig-worthy bass by adding an Audere preamp for not a whole lot of money. I bought used SX 5-string to donate to a church that I play at on occasion. When I'm lazy and don't wanna carry gear to the church, I've played that bass direct through the PA. Nobody's turned their nose up at it yet.
Otherwise I'd say peruse your local Craigslist and pawnshops for a used Mexican Fender or a decent Ibanez, Peavey, or Yamaha. Check back here or at Talkbass with the actual model names / numbers to make sure you're getting something decent. A new Fender Squire can be had for $299 or less. I especially like the '75 reissue. We got my son the sunburst fretless Squire Jazz for Christmas for $225. It's a passive bass and is, in my opinion, gig-worthy.
Passive BassesFender Standard Jazz and Fender Standard Precision basses are passive basses that are used a lot in performance and recording settings. You just have to rely on your rig or PA to adjust your tone beyond what is available to you through the tone knob. For a lot of people, that's enough. Of course, this is coming from a guy who has 6 basses, all active, and whose main bass has 8 knobs and stereo capability