At Lowes (a big box hardware store) in a major US city, I'd say consistently 3-5 seconds.
Caveat that perceptually this seems like a lot longer due to the variable action flow (sometimes sign, sometimes take card immediately, sometimes error) that demands attention.
Caveat that perceptually this seems like a lot longer due to the variable action flow (sometimes sign, sometimes take card immediately, sometimes error) that demands attention.