We do not provide a helium machine. Most people take the balloons to a local party store or florist that provides helium. In most cases you can also purchase small helium tanks for a low cost with just enough helium for a specific number of balloons locally.
Most people fill their balloons at a local party store and say that is the most economical. On average it can cost between .50 and 1.00. Depending on the use some people use balloon sticks to mount and display their balloons and then fill them with air.