Demaestro - 4:21 pm on Dec 10, 2010 (gmt 0)

It is also a great way to ruin your prices. Nobody will want to pay the normal fee any longer.

Is this an assumption or do you have some data that would show this to be true?

I have seen many stores offer "sales" and yet people still shop in those same stores when there are no sales.

It is a simple model that scales well and could go global

It is already global.