Hi everyone, I know this is not strictly TSR, but would anyone who has bought zines like these have any general advice on value? (per issue I guess)

Crawling through the older posts on this (which is a fun exercise in nostalgia - have I been here that long?) it looks like USD 15 to 30 per issue was typical back in 2015 or so. Not sure now.  

Thank you in advance !!