Amazon has Etekcity MSR-R500 Digital Multimeters for $9.65 with free shipping for prime member or on orders over $25.00, you can save $17.34 at checkout.

Features include:

• Use it to safely and accurately troubleshoot automotive and household electrical issues
• Data Hold button holds a reading; large backlit LCD with large digits is easily visible in dimly lit areas
• 3 times per second. Built-in support stand allows for hand free use
• Overload protection on all ranges