Just going on a $10 sale - previously and today as we are not on MP yet, we would pay Ebay fee 9.9% plus GST = $1.09 - PayPal 2.6% + 0.30 GST Free = $0.56c  Fee Total: $1.65

and reading the current MP fee list eBay has sent us it reads 13.4% plus GST plus 0.30c plus GST so if I was on MP today the fee would be $1.80

so going on this there is still a Difference on MP fee structure compared to yours, maybe this will change like yours when signed up for MPs