Yall Store via eBay offers this EOBD OBD2 OBDII Diagnostic Car Scanner for $32.77 with free shipping. That's $6 below our September mention and the lowest total price we've seen. (It's also $6 under the best price we could find today for a similar device, outside of the mention below.) It works on 1996 and later OBD2-compliant vehicles and includes a 6-foot OBDII cable and carrying case.

A close price: Finetech007 via eBay has a comparable scanner for $34.19 with free shipping.