i was looking into getting a vintage bike kind of like this one in the link. I was going to convert it into a fixed gear bicycle. I don't know anything about prices and don't want to get ripped off so is this bike worth $100 dollars?

https://sfbay.craigslist.org/sby/bik/665334271.html

In DC, $100 for a Peugeot road bike with NO RUST is a fair price.

thanks, i'll go check it out and look at the bike's condition this weekend

For where you are - that's well worth it.

Appears to be a good value. For $100, what the heck, give it a try.

I have two Peugeots myself right now.

I bought one of those when new -- my first road bike. The picture is not so clear, but I recall that the bike has too many braze ons for the clean look you likely want to acheive. I would try a bike about ten years older, plus or minus, with no braze ons. The Peugeot is not a bad deal (in good condition), if you decide to buy it.

just offer less than 100$. a good start is "it's going to need a new chain and cables"