Dryer plug adapters can be purchased through online retailers such as Home Depot, Sears and Steam-Bright. As of March 2015, the Sears website carries at least five different types of dryer plug adapters that range in price from about $10 to $15.
The most well-represented brands in the Sears dryer plug adapter inventory are Prime Wire and Kenmore.
Home Depot also carries a wide range of over 15 different dryer plug adapters from such brands as Rodale, GE, Whirlpool and GenTran. The adapters range in price from around $10 for a Rodale 1-foot male-to-female adapter cord to approximately $35 for a Rodale 10/3 amp adapter cord. The Home Depot website also includes cords and plugs to adapt dryers to different voltages such as the GE 30-amp to 20-amp adapter plug that costs about $8.
Steam-Bright sells a power cord adapter for a 230-volt four wire to a 230-volt three wire for approximately $70. The website includes an estimated shipping cost of $11. The power cord adapter product listing description suggests that users check both the inbound and outbound voltages as well as the amp draw of the clothes dryer by using an amp meter before installing any power cord adapters.