Bbrock, you can get mavericks fairly priced, most likely with free shipping at Amazon.
As far as a thermo for a Brinkman. I use an $8.00 home depot bbq thermometer. It works so well, I bought another and put it on my Weber. The one on the Weber works terribly. So I'm 1 for 2. Because 50% QC rate is horrible, I'll never buy another.
In the meantime, I bought a Maverick E-7. I found that it takes temperatures accurately. But it's built like a toy, and the range is not very good. I couldn't find anything better though, so I bought it and am living with it. It has 2 meat probes, and can be set to alarm when the temperature reaches the point you set. It works well on the grate stuck through a piece of wood. The only problem is that it won't alarm if the temperature falls too low in the cooker. For that you have to pay a few bucks more and get an ET73. That unit has one meat probe and one grate probe. And the grate probe will alarm you for high or low temps. I don't need that, so I got the 7.