>>377908458
Your emissions
Your albedos
Your basic bitch features you consider mandatory for a toon shader are all free
And then some.
The masking is free
I'm pretty sure theme color shits free
Presets is probably free
Audio link is even free now IIRC

Only extra fluff is paid

"$10+ will give you access to the pro shader and various patreon shaders. The pro shader is basically toon shader but with extra features allowing for greater customization."

There seems to be a distinct lack of Pro vs Toon feature set comparison