If your driving to Spain this summer,save on Tolls

Quick heads up,Just done this trip this week,more luck than judgement.

St Malo to Rennes no tolls
Rennes to Bordeax less than 30 euros
Bordeaux to Valencia via Pau,Huesca,Zarragoza,Valencia all motorway roads (except the bit through the Pyranees but still a good road) No Tolls