Thanks for the discussion - However what do you think of the...

Thanks for the discussion - However what do you think of the calcs that @Warnie suggested? The following...

"I'll play your game for a moment let's say 10,000 of the 26,000 sign up
let's use your $900,000 per member
$9bln in transactions
let's say 50% are card payments
$4.5bln
let's use your .25% charge average
Say $11m income per annum to SPX
Servicing 10,000 would increase wages exponentially but let's say just $3m quarter all up costs
So signing up Capricorn and 50% of its members covers SPX costs"

So here is the rub, the numbers you start with (percentages of cards/takeup etc) obvioulsy matter a lot.
What has Warnie got wrong (in the assumptions/numbers) or yourself?

Any thoughts?