GUD magazine is offering its first 5 issues (nought to four) almost free. You can pay what you want, anything from one cent upwards. Buy all five for five cents if you like - that's less than 5p for those of us in England.
Is this the way forward for online publishing- letting the market decide the going rate? I don't know but I do know that this is a bargain. If you like sci fi or fantasy, you might like to head over there now.