Yes. I maintain a private “watchlist” of borderline publishers. I keep it private because when I exposed it on my website in the past it had the effect of grouping them in with the predatory publishers, effectively classing the borderline ones as predatory when they necessarilly weren’t.
Regarding listing the top-tier open-access publishers, I don’t do that because it’s already been done very well by others. For example, this list compiled by the University of California Berkeley Libraries is quite well done: http://www.lib.berkeley.edu/scholarlycommunication/oa_fees.html Thanks.
