Has anyone used ko-fi for commisions before? How well does that work out?
It's okay. Ko-fi uses credit cards, so you can't easily dispute payments. The charger sets up the Ko-fi increments ($1, $3, $5, etc.) so hopefully those match their pricing scheme. If you're a seller, ko-fi will respect your anonymity better than Paypal. Ko-fi has an anti-adult material policy, more strict than Paypal's.
Yiff.Life is oriented towards those in the furry and LGBTQA+ communities.