Interesting piece by Patrick Crowley on pricing for different territories:
On the face of it, McDonald’s overall pricing objective is to increase market share, whereas for publishers it tends to be achieving short term return on investment. Bearing in mind that some markets are mature than others, and can hold higher prices than others, we recommend that publishers should consider varying their eBook pricing appropriately. In general, we find that the US can hold a higher price point than the UK, and still be competitive. This means setting your price a price of x and just doing the currency calculations, means you are missing out on opportunities to maximize your revenue.