Remington 710
The Remington 710 is a good gun and is in the cheap catagory of affordable guns. I believe they stopped making the 710 and have changed to something else. They can't all be Remington 700's or Winchester Mod 70's, so they produced the Cooey of the big bore guns. They work and shoot straight and that's all they were made for, and a beginner can afford it.
You could probably get $200 to $300 depends if there is a scope with it. I sold both of mine for around $300 shipped with a scope.
I have been buying and selling guns for 35 years and had a few thousand guns go through my hands. The 710 wasn't the worst gun I ever had, it works and that's what counts. If you want to go to the range and pound a few thousand rounds through it like a target shooter don't buy it. If you only want something to knock down a deer once a year it's OK for that.
I have had two over the past few years and didn't have any trouble selling them. Thay have cheap parts and not too many of the guys are crazy about the trigger guard. The trigger system has some palstic in or around it.
They are tough, I saw one last fall that the owner had the misfortune of loading and firing a 308 into a 270. The gun stayed together and welded the bolt head into the barrel. It must have been tough it stayed together under the pressure and the 308 went out the barrel. It was a total write off and the only thing that survived at a glance was the mag and the stock.
I wouldn't be scared to own one again.