A cynic would also point out that that by not accepting credit cards he also avoids losing the cutr of the transaction that they charge and so makes more money.
I'm not a cynic of course. Personally, my credit card is paid of automatically each month in full.
Uh, yes. That is his entire business proposition, telling people how to manage their finances.
Without any statistics to prove it, I would reckon that Ramsey looses more money buy alienating potential customers than he saves on transaction fees.
I also think that CCs have their benefits, if used in a responsible way. But if Ramsey is strictly against CCs, not accepting them shows integrity.
At least, it creates massive buzz if the tubes pick up the story ;)
But chargebacks are very common in online retailing. I don't think you can chargeback a debit transaction, can you?
Also, if his business is dealing with people who are at the end of their rope, defaults and chargebacks may be more common.