Gecko is too costly for this Australian when compared to other providers of quality Kobo cases.
The cost of the Slimfit case (per your web site) is AUD $35.55.
That case is not leather either.
Your other leather cases are more expensive.
Then there's the postage:
'For shipment outside Europe we charge €6,50.'
Not sure how much that might translate to in AUD, but the point is it's additional to the cost of the case.
You're way too expensive to compete in this region.