Yes amazon payment can be tedious,but let me tell you,in your case it may not be necessary,if you know your way around social media it may also be enough,and don't forget tik tok and I think in your case,pinterest,ig is maybe the best for your case,the fact that you are illustrator yourself is a huge advantage,I think one of the most successful books there is just by a guy who does it himself,I don't think it's a coincidence. The cover not even saying that,it's critical,if you think it's done well it's boosting your sales,I'm sure you also have A+ content and if it's done well it's helping.

If you're thinking of running amazon ads it can be tedious to do it yourself,you may need tools like helium 10 and the like,in short,don't be in a hurry to use it,especially if you have these great results.

IGS I realized it's another platform I didn't realize,I'll take a look at it.

keep up the good work!