Welcome! Looks to be an early 50s Starlet perhaps. If the seller took any photos from the other side, the model name is likely on the chainguard still. Looks to be windswept green, which is cool.
Value is pretty subjective and dependent on the buyers. That's a cool bike but not particularly valuable being a girl's bike. Maybe $125 would be fair to both parties? You'll likely have some work ahead of you to get that going - tires, refresh of all bearings, etc. Good luck!