a bet a good 80% isnt undercut prices tho - its just more about the office making the work load lighter n saving on time n staff.
this is what a lot of its about, not just cost but much easier to manage from office view, its not hard to see that i office member to do one invoice for all stores takes little time to do but the same staff to do lots of invoices for the same work would take so much longer. its also easier to manage as only one point of call, one payment etc
if it helps we was asked to 15 stores but credit to the store managers they all wanted to carry on with there regular window cleaner, i was threatened at one point over one particular store, but i didnt canvess - i was asked to do them,