How economical are political visits?

It is not really news that the CM or PM is visiting a particular location. What usually goes behind the gloss of the news that is usually aired is the amount of corruption that is aided by expenditure without provision during these visits. Expenditure is incurred to set up the stage, to make the arrangements for seating the many thousands who would please the politicians with their presence . And of course, vehicles are arranged to bring the multitudes to the location. In some states like Kerala there were reports of the crowd membership being remuneratory. And there are not too many reasons why it is not to be expected in other states.
Sanctioned expenditure is also stretched to its limits. If the visit is to a location which is away from the district headquarters, almost all of the officers of the district and more, frequent the site for atleast 5 times. Estimate 500 rupees for each vehicle. That would be about 12500 for every set of visit. So around 5 times, you can calculate. Should we count the administrative and political energy that goes into these ventures. It is not to be believed that the administrators and politicians would have done anything too spectacular with the saved time. But then such events give them an excuse which they need. Well, there are talks about state-sponsoring of election expenditure. Even these visit-events can be a good candidate for sponsoring. When expenditures are incurred without any provision, it would lead to a more pliant administration which understands such kind of given expenditures. And this keeps happening at varying scales in the government. Lakhs of expenditure for the top boss and may be just a tea and snack for the visiting Patwari!