I have traded brass that I don't load for supposedly once fired from a few different forum classified with reasonably good results. A few shipments came in that had very questionable brass as far as "once fired". I sort it good and chuck some. I also have cleaned out my closets and came up with some good stuff that I haven't used in years and put it up for trade for brass and have done really well. I have 1000s of cases now, in all the calibers that I load for with the only cash being shelled out was for shipping.