Pretty sure they backtracked on the $2,500. I've always considered it would be really funny to do commissions with postal money orders but obviously that's not a serious solution.
Damn. Unfortunately they really monopolized the whole online ecommerce thing. I've heard good things about Stripe, but it mostly assumes you have it on your own bespoke website. However, I believe they do emailed invoices that can just be paid directly, so it's worth considering. Articles I've skimmed say they take 2.9%+30¢, not sure how that compares to paypal.
why are you afraid that paypal is going to fine you? I'm just curious...
https://www.furaffinity.net/journal/10354198/
Is what a few Russian artists have been using