$20 one time for a well developed app that I use multiple hours a day is inexpensive.
I pay almost as much to multiple streaming services PER MONTH for a shitty experience and sometimes not a completely ad-free experience.
Anyway, in all honesty I chose the $1.99/mo because it gives the dev $24/yr into perpetuity. I also donate to instances. I also use Connect and Jerboa and Liftoff. It’s whatever.