I am needing to buy thermometers as well. I found on bbqsmokersupply.com the smokerbuilder TelTru thermometers or at least the picture is of the smokerbuilder TelTru thermometer. They are $32.00 compared to the $19 dollars for the ones on smokerplans.net.
I hope someone else can shed some light on the thermometer on the smokerplans.net site.