MPLS over FTTC

We are going to set up several offices (about 10) and we would like to create a VPN between them

I know we can create a private VPN MPLS but usually that takes expensive infrastructure/bandwidth.

We have a provider in Italy, Klik network, that provides a VPN MPLS over all our branches, but that set up is very very expensive (thousands of Euro/month).

We don't want to spend that sum for our small agencies.

Can you create an MPLS over FTTC ? In general over a simple internet connection?