Haven't used my Eastlink/Citylink pass on my own cars in a long time, and now im using it again seems to drain funds pretty damn quick. no tag = photo numberplate recognition thingy, price is 0.75c per trip (thought it was cheaper... used to be 0.25c on Eastlink).
Anyway, reading about the tolls roads... It hadn't ever occurred to me, that if you buy a 24-hour citylink pass, its a flat rate for 24hrs. But if you have a tag and use it three or more times a day its more expensive than tagless... and when Transurban was told about this they said people can remove the tag and get a pass if they like (but passes are limited to a certain amount per year. What bullshit.