Phillip J. Reed is Famous!
Well, it's a reason! If *I* have heard of a person, they're famous... I remember, after watching
Johnny Mnemonic, writing to a friend of mine and telling him I had just seen this movie, with "some guy named Keeanu, or something like that, in it". He wrote back and told me that I might want to keep it a secret that I didn't know who Keanu Reeves was... Whatever!
Anyway, I know your name, so you're more famous, now, than Keanu Reeves was, before
The Matrix. Again, whatever! I have also heard of Green Ronin, although I wasn't aware that you were him.

So I guess name recognition counts for something.
I also have a folder under My Downloads\Bookshelf that's entitled "Phillip J Reed", too, and I just got things worked out with the ENWGS so that I could order in the last two months, or so. I've spent almost $40, so far (currently fighting to get my Medicaid back, after being dumped for having "too many financial resources" - living on $579/month)!
I also participated in that thread on Mundane Treasures, a while back, that I
suspect might have inspired a couple of .PDF products in a similar vein... not that I'm complaining, or anything (well, except about Medicaid, in the state of Misery)!
Anywho, if I were you (and I'm not!), I'd try doing something besides "101 (X)", "A Dozen (Y)", and other such generalities. Try something far more specific... "A Dozen New (Higher-Level?) Fighter Feat-Chains", "A Dozen New Cleric Feats" or "A Dozen New Cleric Domains & Spell Lists", "A Dozen New Roguish Feats", and "A Dozen New Wizardly Ways". There; the four core classes! Hard to go wrong, with that! I could give you some other ideas, too, but I'd hafta chargeya fer them!
Even better would be to GET AWAY FROM the "101s" and "Dozens", and just select an area to cover, in-depth! As several have said, "101 Feats" isn't too specific. It's too vague, and too general... A book on, say, the new Dragon Shamans, with new Feats, Domains, spells, etc., might do better. I realize "101" and "A Dozen..." are your product branding, but... maybe instead of time to move on from Fantasy, it's just time to CHANGE THE BRAND?!?
Hey, it's an idea. And it costya nuthin'... Sometimes ya get whatcha pay for, sometimes more, sometimes less. My suggestion: More of a THEME to products than a number...