[tszyn]

I think the psychological problem isn't as big as it's made out to be. Every time you turn on the lights or plug in your mobile phone charger, you're making a micropayment to your power supplier. Yet you use electrical appliances every day without giving it a second thought. Why? Because you know, more or less, what your typical usage ends up costing you and you mentally accept that expense in advance.

[jon_dahl]

The bigger problem, I think, is not being able to control costs. I'd rather pay $12/month for Github than $0.02 per commit, for fear that I'd have a really productive month and end up with a bill for $200.