About how much would a 250cc dirt bike cost me no specific brand ??

Brand is everything.

Just call for prices

I paid $4,500 for a 300cc 2015 Kawasaki Ninja brand new so I'm guessing you would pay between $1500 to $3000 but you have to take in account the year also. You can go on a site called "Offer up" there are guys selling all types of dirt bikes at reasonable prices. I've seen a few on Facebook also but the choice is yours. If you can afford a New Bike then definitely get one but a used one wouldn't hurt especially if the owner takes good care of his bike. Be safe on the road because drivers don't like us bikers Lol. 😉👍🏾