So I sold my physical stuff years ago but miss it very much! Want to buy again but wow, it is tough piecing together

Well my buddy has a Batman run, issues 502-713. All VF/NM, NM bagged and boarded, he wants $400 for that


He also has Detective 670-855, he wants 350 for that



Batman seems like a good price, not sure what do you think? Would rather wait for full Detective fun up to 881 I think but the Batman is a nice run