I'd stick the games and newsletters in ziplock bags and take them to the flea market. My mom sold stuffed bears and the fleamarket twice a month, and I'd go sit with her, take a corner of the table and sell my little ziplock bags with newsletters about shareware games and floppy disks with 4 or 5 games on them.
I can't remember how much I charged, no more than a few bucks. I wasn't charging for the *games*, which were free for anyone with the patience to go download them. I was charging for the time I'd put in to curating and describing the games, and for the cost of the paper, the bags, the labels, the stickers, and the disks.