Geez Fred, just buy your very own 250ml set... 45 Euro, less German VAT = 36ish Euro + 20 Euro shipping = 56 Euro = $86AUD. Divide by 10 = $8.60 AUD per 25ml oil change. Simply not worth the 1 litre bulk buy and redistribute hassle.
For those outside Australia (I'm guessing that's a couple of you), the shop asking price here for a 25ml change set is upwards of $30AUD!
What I have done - three Rohloffs in the household now. The value is even better if you can accurately measure 15ml - all that Rohloff say the hub requires. Difficult to do this and keep track of the left-overs with 25ml bottles, but a soda with the bigger bottles
250ml/15ml = 16 oil changes.
$86/16 = $5.35 per oil change