We arrived in Argentina a couple of days ago. Therefore the DSWU website is active again. What new words we are learning!
Peaje can be used to talk about a toll booth or the toll you have to pay when driving on a toll road. In Mexico we used the word cuota which did not seem like an odd word at the time.
Cuota is a fee that you pay for a privilege or a membership.
Peaje seems to be exclusively used for paying a toll on a toll road.