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What fool would lose 3-5% spread (at least) on two times exchanges instead of paying 0% to spend the fiat with a credit card?
The costs of a credit card transaction can vary widely, from under 1% to even over 50%.
You failed to grasp my point that the credit card holder pays 0% (or even gets cash back). What the merchant pays is irrelevant, unless the merchant is giving that 3-5% discount to the Bitcoin purchaser. Even with a discount, it is bad tradeoff because we are pushing our ecosystem to hell.
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My point is that in some cases the cost the the "credit card holder" can be upwards of 50% or even not be able to make the transaction in the first place. The case of an individual having to purchase a prepaid "credit card" in order to make an online purchase and spending more on "fees" then the amount of the purchase is a real case situation. I have said this over two years ago and will say it again. The low hanging fruit for Bitcoin has a FICO score of 350 or thereabouts or lives in a country that is blocked, or is under age 18, or wishes to purchase goods or services from an "high risk" merchant across an international boundary etc etc.
The cost to the merchant can be very relevant particularly if the transaction fall into the "high risk category". Ever wonder why so many retailers refuse international credit card transactions for example? Not every transaction involves a consumer with an 800+ FICO score purchasing goods or services
in person from a large retailer.