Yep, I even buy ones in languages I can't read for the beautiful art. Though I do prefer English versions. I have all of your books that were available on lulu and I got memento mori on amazon ^^ If Pink and Black gets printed I'd totally buy it!
Il m'arrive d'acheter des webcomic en version papier 1) parce que j'ai toujours eu une préférence pour les version papier <3 2) si y a des bonus pourquoi dire non ? XD 3) mais seulement si l'histoire me plait
I'm between - Not if the price is too high or the number of page too low - Bonus Only
Honestly, if there is a bonus and I like the art/story/etc, it gives me more incentive to buy it. However, if it's too pricey for the content (in my opinion) I will pass up the bonus.
Usually, if I can read it online free, I don't buy it (I have too much paper and books everywhere) but if there is a bonus story only available in it (side story or something) that's even better than just bonus images. I might consider more heavily buying one with a small bonus story to it.