[damian2000]

Not illegal in Australia, where kogan is from. Unfortunately there's no limit on the amount a merchant can charge for payment/card fees. For example, I believe the most popular taxi charge company here (CabCharge) charges a 10% fee when paying by credit card.

[bcowcher]

I do believe the RBA was going to investigate this [1]. If they do anything about it is something else entirely however..

[1] http://www.heraldsun.com.au/news/reserve-bank-is-investigati...

[mayneack]

In the US. My bad.