We (actually it was Darren) have added a new Geolocated Pricing option to our site.
This should locate where you are browsing from and display the prices in your currency, with GST (Australian Sales Tax) if you are in Aus and without GST if you are outside Australia.
We have the options of AUD, USD, GBP*, and EURO, which probably cover 95% of Countries we sell to.
*Didn't want to be in your bad books again Simon B.
If you are browsing from Sweden, for example, we don't have the Swedish Krona option (Jag är ledsen), however, it will display the prices in AUD without GST. You also have the option to switch to USD or Euro, if you are more familiar with prices in those currencies.
Note: if you in Australia but have a VPN set outside Australia, or you are working with from servers based in another country (this just happened), then you will see the ex-GST prices, however, once you pay the invoice you will be charged GST (which is based on your shipping address)
Also, please note, when you get to PayPal or ANZ (Credit Card payment), the price will convert back to AUD, as required by Law. The conversion estimates should be pretty close; with a few dollars or so.
There may be some issues, so please have a play and let us know if you can find any bugs.