Commission pricing question (Patreon)

I'm still working on animations, don't worry!

I'm trying to figure out what I should price my animations at. The $100 base feels fair but I feel that the price for additional time is a little low. I'd love suggestions!

4k Posters: 

Base $60 

Extra character: $10 each character

Animations 1080p: 

Base $100 (typically ~10s loops) then $25 every 10 seconds after 

Extra character: $10 per 10 seconds for each character.  

Prices increase as a multiplier for content I'm not comfortable doing.