I hate pedalcycling and I'd much rather get around on the pedalcycle than that hipster-mobile. $300 seems steep for one gear though. At that price you're getting close to a car or motorcycle. Either, congrats on dropping the frivolous waste.
Good luck finding a $300 car that runs. Or a motorcycle for that matter.
I have found many cars in that price range that run, maybe not $300 exactly, but I have found a Volvo S40 for $400 that just needed two brake lines which I got at the junkyard for a couple bucks, I sold that car for $1k
Volvo 740 Turbo, i found for $450 and it ran perfect, it had an oil leak. I removed the interior, detailed everything, fixed a sunroof issue, did a new timing belt, water pump, and front seals (super easy on a B230) and sold it for $1950.
Volvo 240 Wagon I bought for $300 and just finished doing a fuel pump on it (I put a $20 pump from a mustang on it) and I'll probably sell that for $800 or so.
I got a 93 Suburu Impreza AWD manual (fun car!) for $600. It ran but intermettely would not run. A used fuel pump for $25 off a newer subi and it was fixed. Sold for almost $2000
Just as a few examples.