This year 4 of us roadtripped 2700 miles round the alps going into switzerland, italy and france, we went to soo many places
pila, alp du huez, les alps, les gets, morzine, morgans, crans montana, les du alps and many more that i have forgot as they all sound the bloody same :D it was amazzzing split between 2 of us per car in a car that struggled to get 350 miles for £50odd quid we didnt spend more than 800 each.
it was more expensive because we were going to lots of places but things you cant avoid are day lift passes work out about 20 euros a day.
camping works out 8 euros a head
food works out about 8euros a day if you buy it but we took cans and a cooker and pasta ect and made buttys so a bit cheaper
petrol costs and toll roads
all in all i think if i made a consious effort to keep it cheap as chips it'd have been about 500 each for 2 weeks visiting most of the best tracks in europe and not just getting sucked into les gets like too many people do
well worth it highly recommeded, met some great people and road some immense tracks!