It seems as though some KMart stores have begun a clearance sale on a couple of TracFone handsets. Some people have reported finding Motorola V170 TracFones for just $2, while the LG 3280 has been found with a price tag of just $5.
Either of these represents a pretty decent bargain even if you only use the phone to get the 20 bonus minutes and 60 days of service on activation, then immediately transfer those minutes and days to another phone. Another option, if you can find one of these bargains, is to keep the phone around simply as a backup. Either way I would recommend grabbing these deals if you can.