TomTop offers this OBDII Bluetooth Wireless Diagnostic Scanner for $3.89 with free shipping. That's tied with our mention from last May and the lowest price we could find by $2. It works with a free program that allows you to use your PC and a hardware interface to get information from your car computer.

Note: This item ships from China and may take up to four weeks to arrive. The countdown timer on the product page does not reflect an actual expiration time and resets daily.