Hi gang,
I am leaving tomorrow for the Nice area and asked the TI a question about passes for the bus lines.
As of July 1st, they eliminated paper tickets in favor of a rechargeable card. That card is an extra 2 euro fee.
So if one is boarding a bus, the fee will be the fare + the card. It appears that a one-way ticket is now 2 euros + the 2 euro charge for the card for a total of 4 euros. It sounds easier to buy the card pre-loaded at a station if there is a ticket machine. I'm going to be coming from Villefranche and don't believe there are any ticket machines at those stops.
Here's the flyer with more details.
https://www.lignesdazur.com/sites/default/files/2023-06/Flyer%20A5%20anglais%20-%2009.06.23.pdf
Also, note that Bus Route 100 is now Route 607 as of the last few months. I sent in an email o the Rick Steves team but this information still has not been posted to the section of the website for guidebook updates. Given that Route 100 (now 607) is such a key route for the Low Corniche buses, this seems like key information you'll want to know