Code BTCWIN is expired after only one day?
Furthermore your pricing isn't very competitive anymore.
Example: Sony Alpha 7 II, 1,595 USD
Camera less 7% plus 19% German VAT: 1,567 EUR when it arrives. This doesn't include potential fees of your Bitcoin payment provider applied to the BTC rate.
Amazon: 1,564 EUR, delivered, all taxes included, will arrive on Monday morning when ordered today.
Sold and shipped from a EU dealer I enjoy all regulatory provisions regarding warranties and customer protection following EU law.
For me to buy from a Australian shop shipping from HK it would need a bit more than a higher price, waiting time, customs paperwork and other shortcomings. A nicely built online shop alone isn't enough, sorry.
Same example shipped to US you win btw... According to your DutyCalculator it's Duty Free there and you beat Amazon.com by 103 USD. Well, I'm in the EU, not in US.