emugoo, you are talking logically. And that is what a business would have to do... But now think of what is happening bitcoin users are paying upwards of 10-20% in "transaction fees" why would anyone do that when you can just pay direct in USD or whatever I will be eventually converting that money into?
I was talking about the current situation. In the current situation, demanding a surplus payment from Bitcoin payments compared to "old" payment makes sense, because there's few ways to transfer Bitcoins to begin with. So in effect you're offering surplus just by allowing Bitcoins!
Now if the chosen premium restricts sales, it's always possible to revisit the amount, or remove it. But altho most people are aware of the daily price, it's just unfeasible to always offer MtGox rates in an online shop. In effect, you'd need to choose a temporary average amount anyway.
Finally, thinking that bad prices stifles all shopping is just wrong. Just look at any online shop comparison site. most products are sold at very wide band of prices. So if bad prices would destroy sales, everyone would have settled on the same price for all goods by now
