The amount varies, but it's the same scam over and over.
We were recently on a road trip and took some toll roads to save travel time. You don't throw coins in a bucket anymore. You drive under stations right over the road that take pictures of license plates, marries that data up with the owner and then snail mail you a bill.
Well, to say the security on the servers for these pictures is lax is a massive understatement. The next day after driving under a series of them, I got a text message saying I needed to go to some random URL and pay the toll by the next day, or my license would be revoked.
It took less than a minute to confirm it was a scam, and so I deleted it. That was over a week ago. Now for two days in a row, I've gotten similar text messages to pay up "or else" - from phone numbers in the Philippines. Yeah, sure, I believe that.