Disposable welder's face masks are a cheaper solution if only welding occasionally. However, professional welders and fabricators would typically use 1 x disposable mask per day and over time those costs would multiply and outweigh the investment cost of a quality PAPR or supplied air system, including replacement maintenance filters, not to mention the amount of waste that disposable masks cause. Usually, PAPR systems give better breathing protection and are more comfortable in long-term use because of cooling air circulation.