@Nixlord
Inkwell Ideas just fulfilled their Kickstarter for the newest set of monster cards, the series of which cover all the monsters in the Kobold Press 5e books.
I know you mentioned that your hosting venue prevented sales in other channels, however I'm not sure how that would apply to derived content like cards made from your books.
I suggested to Inkwell they get in touch with you, and I'll suggest to you that you get in touch with them. I would buy sets of monster cards for all 3 (when this one comes out) of your books if they were available and I am sure many others would as well.
Just a thought to pass along.