$1 intervals (Score 1)

The .99 ending only might be because iTunes is present in so many different countries, each with their own currency. What in the US is priced at $1, is in Denmark priced at kr. 6. Amazon on the other hand uses the actualy exchange rate to give a price in different currencies, which gives very odd prices in any other currency than the intended. Im guessing that Apple uses a simple formula for currency exchange in 1-dollar intervals, for simplicity with other currencies. So if there's a currency that's something like $1 = 0.7, an item that costs $1.50 would cost 1.05 in this other currency (Ignoring ending the price on a 9). And something that would cost $1.30 would cost 0.91. So to conclude: Pricing in $1 intervals makes it simpler for Apple to make round prices in other currencies.