The price of lots shall be adopted by the City Council, subject to revision as the City Council may see fit from time to time. A price list of lots shall be kept both by the Cemetery Superintendent and the City Treasurer. All lots and opening of graves shall be paid for in advance to either the Cemetery Superintendent or Treasurer. The City Council reserves the right to refuse the sale of any lot or lots where, in their opinion, the same is being purchased for speculative purposes. Provisions shall be made for the sale to the county of such lots as may be needed for the burial of destitute persons. Such persons shall be buried without further charge other than the usual fee for opening graves, to be paid by the county.