It's very difficult to do 'micropayments' on a credit-card based architecture - card fees are usually a percentage + flat rate cost (say 2% and the first 20 cen

It's very difficult to do 'micropayments' on a credit-card based architecture - card fees are usually a percentage + flat rate cost (say 2% and the first 20 cents of any transactions). Because of this flat fee anything below around 99 cents quickly becomes unprofitable to sell. It's why companies that do microtransactions do so with other payment methods, like alternative currency (FB credits, etc). Of course, you can also use service such as Spotify if actually having the files themselves isn't important to you (I'm more than happy to pay £5 per month to Spotify for what's actually a quite impressive library). For large consumers of music that can be quite attractively priced.