Specifications include, but are not limited to: An “all or none” selection of one or more providers to provide Plumbing Services on an asneeded basis. Award will be based on Best Value. Best value means more than low cost. It includes cost, service quality and other factors detailed herein. The intent is to establish a panel of Plumbing contractors that will perform Plumbing Services for KCSMO. Other departments may use the resulting contract. Overall management and direction of the Plumbing Services function will remain with KCSMO. The successful contractors shall provide Plumbing Services on an "as needed" basis: 3.1.1 Vendors may be asked to work and price jobs in two (2) different ways. First, vendors, may be asked to work and charge by the hour. Invoices would simply reflect the number of hours multiplied by the bid rate. Materials would be listed and the markup applied. Secondly, vendors may be asked to price work by the job. Again, the quote would be based upon the labor rates quoted herein and the materials would have the appropriate markup. However, the vendors will have quoted a not to exceed price.