I don't think I'd pay $100 but if I could just download the app on any phone (e.g. OnePlus 7 Pro) and get Pixel quality pics without any gcam tweaks, mods, issues, I'd definitely pay money. Not sure what the threshold would be for me... maybe somewhere between $25-$50... but that's only if the paid app stays in my library and can always be downloaded on future phones too.