They invited me to become professional seller in Jan 2023 and promised me a seller fees of 6%. However without any notification (no email, no message), they increased my fees back to 12.5% plus VAT. I priced my item according to 6.5% so deducted 13.5% (plus tax) away from my final sale I'm actually losing money, I almost shipped the item without noticing. I can believe such a big company they SCAM sellers like that! I won't ship my item until they change my rate back. I'm done with Catawiki