Question about selling a gun legally in Ohio?

i got two guns one i am going to sell back to pawn shop it is a single shot so lets move onto second the second gun is a Mossberg 500 it has a 7+1 capacity it is a pump action and it comes with these accessories i put on it a sight mark red dot site i paid 60 bucks for a sling shoulder strap for gun 20 bucks a 6 bullet holster 5 to 10 bucks i think a limb saver medium sized pad 50 bucks and screwdriver and 2 locks 1 mossberg lock came with gun other pistol guard lock 10 to 20 bucks 2 keys for each lock and a screwdriver and Alan wrench that goes to the sightmark red dot sight and oils and a gun scrubber synthetic safe cleaner the gun cleaning kit in a can so how much should i sell all this for oh i forgot to mention a mossberg 500 7+1 is found on buds gun shop for 300 dollars new please help