one company I started to worked for had a BT MPLS half installed at 4 sites at a cost of 70k UKP per year.
That one took a fair bit of working to get configured mainly giving all servers information of where
the other servers were located. To get internet to break out of the mpls took a bit of a back route of
having the contact details of one of the senior cisco techs at BT from a previous issue got this working in
a matter of hours rather that weeks