Calais to Ancona Dec/Jan - tolls that could be avoided?

[tregaron]

Hi,
Driving down to Le Marche in Dec/return Jan. I would like to avoid the expense of tolls, but wonder at that time of year, considering weather and timescale of journey, it may be wise to use some tolls.
Would be great to hear from anyone who has made the trip, or even parts of it, during the winter.
Many thanks.
Mike