I ran a test journey from Magoula to Patras, and while Magic Earth is capable of detecting toll roads, it will not tell you where and how any times you need to pay the toll. In addition, it appears that the signage for the toll-free slip road before the first toll station at https://www.openstreetmap.org/?mlat=38.042214&mlon=23.495700 is really dodgy: you have to keep to the rightmost lane to access that slip road.

If the results by Magic Earth is still tricking you into paying tolls, then you may want to file a bug report with them: we are trying our best to make the toll information as complete as possible, which can be seen at the Americana map, but not all routers detect toll roads, nor tell you where you must pay tolls.