Let's see: you want a folding bike, vintage, with drop bars and wide tires, by September - which is right now - and your budget is $200. And do you want an egg in your beer?
You might luck into a Dahon Espresso or Jack you could fit drops on, but I'm not hopeful. More realistic in your budget would be a possible Dahon derailleur geared Eco or Vybe you could fit with drops (you'd have to z-fold instead of u-fold). These bikes are all from this millennium.
Ah! DEcember! Sorry, I had a brain phart moment their.
And an egg would be great, thanks!
But I know it's a lot, and I'm looking to learn what comprises I'll need to make. Wider tires are just a "nice to have" for instance. As are speeds. Most important is a rigid-ish frame and drops compatibility. 200.00 is the ballpark, if the "right" model came around for a hundred or so more, then that would be doable, I just want to know what that right model would be.
Is there a general folding bike review site I could check out?