Best lift pass for the resort/area - Courmayeur

We are 4 experienced skiers going to Cormayeux in Italy at Feb half term. We haven't bought a ski pass yet as not sure if we can get a wider 'area' pass rather than just Cormayeux? Not sure if Cormayeux is going to be enough for our group. Please could someone advise if there are links with other areas, preferably by slope/cable car etc, and if not by short bus route? And what sort of pass to get at what sort of cost? Cheers Susan

The Full Aosta pass gives you ...I think the option of two of your days at any of the following as well, la Thuile,Pila, Cerninia and Champoloc areas

You can ski in Chamonix, there used to be a bus. Check with the local tourist office.