Yes. There is now a Double Dragon reward level. While the campaign is live, you can alter your pledge.
Those in Australia or New Zealand wanting even more copies are encouraged to send me a message and I can give you the amount to pledge to make that happen. Sorry, this isn't possible elsewhere as Send from China is best for shipping small, compact parcels under 1 kg.
If you're a prospective retailer, I'd also love to hear from you.