Last year I picked up 2 River Country glow in the dark that seem to work fine but was not happy when the pointer faded in less than 1 month.
At the start of this summer I bought 3 Tel-Tru 3" glow in the dark thermometers for my new pit and they are a lot easier to read with a brighter glow.
Going directly through Tel-Tru was $54.02
The best deal I found was @ http://www.firecraft.com
$39.95 ( 3" silver, black or glow) with free shipping on orders over $99.00
Like everything else free shipping never applies to us in Alaska