A couple of years ago when I was migrating from Exchange 2000 to Exchange 2007 I paid MS to perform the migration. They did a through site evaluation, provided me with a quotation and then performed the whole job remotely while I stood by to assist if necessary in the data center. The whole process was fantastic and worth every dollar.
Now I am planning on a small corporate merger with two functioning Exchange 2007 servers that I would like to migrate to Exchange 2010 or possibly 2013 and I am interested in the same support. Does MS still offer this type of engagement?