If I remember correctly, it was around $200 or so. It was a few years back when instant swap service was useful for me, though, so I think it isn't that relevant anymore. Not to mention some services that I used in the past changed their ToS several times. The only time when I needed to do another KYC was on CEX. It's not hard to imagine I might get slapped if I decide to transfer coins received from some campaigns to instant exchange tbh.