http://www.thebitcointrader.com/2011/12/bitcoin-and-conventional-business-do.htmlBitcoin and Conventional Business do not Mix
It's time to be truly honest about what we're up against in terms of motivating the adoption of Bitcoin.
Imagine the best-case scenario where Bitcoin exchanges accept credit cards, directly. There is absolutely no way they will be able to drop a credit card deposit fee below a very generous 2%, and that's assuming that chargebacks won't happen, which they will.
Add the additional 0.5%, or so, that you would have to pay for actually buying the Bitcoins on the exchange, and you're looking at a minimum of 2.5% in fees from the get-go. That 2.5% already negates any savings that a merchant could offer for someone willing to pay with Bitcoin. Right there, we know it makes absolutely no sense to offer a product or service for Bitcoin when the same thing can already be acquired with credit cards or PayPal. Now you understand why Cheaper-in-Bitcoins made almost no sales whatsoever, and why you'll never see Amazon adopt Bitcoin.
I will add that, yes, there are ways to purchase Bitcoins without credit cards, but they are inconvenient and the savings would not be sufficient to motivate someone to go out and buy Bitcoins so they can buy conventional goods online.
The rest of my post talks about where Bitcoin will