Those magazines, and the broadheads, are worth what someone will pay for them. No more, no less. Your besat bet is to put them on eBAY and let the bidders decide, if your intentio is to sell them.
When it comes to the magazines, a lot has to do with what are the feature articles, who is profiled in hunting stories and articles, other content, etc... If you list them on eBAY make sure your description detailsthe content ofthe magazine. If theare really collectibles, the collectors wil lsee them and jump in accordingly.
Good luck