Ok, it's West Virginia on I77. The total for the whole stretch is $3.75 from Charleston WV to almost the border of Virginia. On the way down we by-passed US 19 and paid the toll in three different places ($1.25 each). On the way home we got off and used US 19 costing $2.50, I think ?
BTW US 19 is not as bad as some would have you believe, if you drive the limit which changes a lot (well marked) you will be ok. It will save about an hour and is well worth taking. I regret not taking it on the way down.
Chris.