Not only are used gas dryers safe, they also generate more heat than the electric variety to dry clothes more quickly. Because there is less demand for gas dryers, they can be cheaper secondhand.
Shoppers should expect to pay between $50 and $150 for a used gas dryer, as of March 2015.
With any gas appliance, after it has been hooked up and is running, any smell of gas should be reported to the gas company as soon as the homeowner notices it. The utility company sends out a representative to check the line and the connection to the dryer.