I needed an extra weight for my Meade.
An old metal paint can, a kitchen stove and some scrap lead worked wonders. A wooden stick, well soaked in water, made a central hole which needed only slight tidying before the weight went over the shaft. No fastening screw so it is held between two of the original weights which can be fixed in position.
Acquiring scrap lead is not that difficult.
Cost me nothing but a bit of butane for the stove and 30 minutes of my time. I even found the can discarded on a building site.