[yepguy]

You may be able to get by in the US without a credit card, but every purchase will literally cost you 2-5% more if you aren't making smart use of them.

[NetMageSCW]

These days in a lot of places it is the other way around- using a credit card costs a 3% surcharge over cash.

[yepguy]

I feel like this is regional, because I keep hearing it but I never run into these places.