Is there a submission deadline? I've been on Etsy for a couple years, and I have plenty I'd like to say about it, so perhaps I could write something. My email address is firstname.lastname@example.org if you wanna send me more info, and my Etsy shop is http://schoolformaps.etsy.com, just in case you're curious.
though i have sold a bunch of zines through etsy, i have to say it's pretty cost prohibitive if you're only selling 1-2 at a time. people end up paying more to cover fees and postage than the zine. etsy's really only cost effective if you're doing larger ticket items and originals. sadface.
still, i have been exposed to a lot of great people and have had some great repeat business from several folks who are awesome zine supporters. =) the key is just to sell in sets, i think.