OK, that's a standard "dumb" (despite it being made by Smart TTC) 3-phase meter.
I'll put money on it going backwards on export (if you do try it make sure the numbers count down too). Of course, this is not permitted, so don't get caught!
I bet the local PEA just ran out of electronic meters.
I'm pretty sure there's no extra charge for an electronic meter although they might charge you for one programmed for export metering.