My payments usually come through quickly. The payout is sent around 1-2 a.m. and mostly is available in my bank account by 10 a.m.

For whatever reason, eBay takes 1-2 business days to process funds before making them available, and this is not actually a long time to wait -- another big online market place whose name I won't mention holds funds for 6 weeks in case there are any issues with the sales. If eBay were to use a fast payment method, you might get the funds a day or so sooner but you would still have to wait out the processing period.

Besides, payments coming through as they are made is more of an accounting nightmare than bulk payments, and a fast transfer makes no appreciable difference to the time a bulk payment takes.

I do agree it is annoying not having funds coming in over a weekend, though.