I say this as a long fan who I think comments on almost all of the updates. I hope you know you are WELL WITHIN your rights to charge a lot more for your work. There's supporting indie devs, sure, but as an indie dev, this is an incredible amount of work. I'm honestly inspired to try godot to properly build systems for all the assets you provide (8-ish year RPGMaker dev here haha). This could be priced $15-20 and it would still be incredibly fair. I just hope you're able to make a living from these packs. There's no shame in breaking up future releases into further pack types you know? Just felt I had to say something, what with you doing the updates here AND on patreon. It's a ton of work and effort and I hope you're making what you need.
Incredible update as always, fam.