The price elasticity of supply is dependent upon a number of factors which makes the supply of different commodities inelastic:
- Availability of raw materials: The more easily available the raw materials are, the greater is the elasticity of supply. Platinum rings will have an inelastic supply as the extraction of raw material is complex and tough to change in the short run.
- The time period given to the suppliers to respond to the changes in the price: It is hard for the suppliers to increase or decrease their supply in the short run but relatively easy to do so in the long run which makes the supply inelastic in the short run.
- The mobility of factors: The more complex it is for a producer to divert the resources into the production of a commodity, the greater is the inelasticity of supply for that commodity.
- The complexity of production: The greater is the complexity of production, the more inelastic the supply. Auto manufacturing is carried out in multiple stages and requires specialized equipment and skilled labor with research and development costs that make their supply relatively inelastic.
- The binding constraint: Land is limited and cannot be produced, hence, its supply will always be inelastic. Paintings of deceased famous painters, historical documents, antique pieces, fossils, etc, are only available in a specified amount which makes their supply inelastic.