Commission pricing feedback (Patreon)

Hey all, I am going to be opening commissions soon and would really appreciate some feedback on setting fair commission prices.

I'm looking at setting the base price for single characters renders to be at $50 USD, 2 characters at $60 USD and 3 characters at $70 USD. I would like to hear your opinons, whether you'd consider these fair prices, if you'd buy commissions at these prices or if you would but at a lower price point (if so, please comment what price you'd be willing to buy at).

I'd really appreciate hearing your feedback on this, even if you aren't interested in getting a commission I would still like to hear what you'd consider a fair price for one.