So shouldn't whatever the annual inflation rate is be deducted from the 3.78% increase?

I'm pretty sure I've seen that done on previous years figures, which has reduced the real increase to virtually nothing.

Another thing that has to be factored in (or taken out) of the calculation to get the true increase in ebays revenue is the automatic increase ebay gets every time RM and the other delivery companies raise their prices.

I don't know either of the figures off-hand but even taking off just 1% for each, doesn't leave much of an increase that has been created by ebay.