Firstly - it's funny how Airbnb designs and keeps discussions inside their own platform, so that it would be manageable and won't get anywhere out to keep the reputation secure.
Secondly - the way service fees are calculated looks like a scam (pardon, loophole). For me, as someone who've travelled a lot and used service on a daily bases, fees are higher for no apparent reason, than for someone with new account (attached screenshot, showing same property, same dates, same minute of booking attempt to illustrate the issue).
Asked support to comment that - no response so far.
Please explain the difference.