Question on fees

Sellers — do you actually know your real take-home % after all fees (commission, processing, shipping cut, boosts) on Grailed/Depop/Poshmark/wherever you sell? Or do you go off the headline number and get surprised later?

And has the customer service felt like it's kept pace with what you're paying, or has it felt like it's gotten worse/more impersonal even as fees stayed the same or went up? Anyone have a specific story where support really let them down on a dispute or a frozen payout?