I'm helping my aging brother sell his excess ammo. In particular I need some advice as to how much should I ask for 3 boxes of 22 shorts, probably collectible ammo. I have 2 boxes of Federal Hi-Power 22 shorts with an old price tag of $1.49, which suggests they are 40-50 years old and an even older box of Remington Kleanbore .22 shorts. These are full 50 rnd boxes intact and in good condition. How much should we ask? I've seen similar ammo sell for about $15 at auction, but these are older and the boxes are in better condition. Also have several boxes of Remington CBee 22 Low Velocity 22 copper coated shorts. I'll appreciate any help you can provide.