Welcome to the Community Forums @ysiklov. I've been waiting to see if you would come back and tell us the awesome car you found. I hope that is the case.
There are so many current conversation going on that you can take part in. Share more opinions and ideas about your OfferUp experience.
Also, there are lots of car buying tips as well.
Hope we see you back in the forums soon!
It's pretty easy to spot the dealers though. If you will notice in the plcture, the dealers car will have the price of the car in large numbers on the windshield and you can tell a lot from what's in the background. (lots of cars parked in rows in a parking lot) Just FYI. It's how I weed most of them out. Hope this helps.