Excellent price. Bluetooth 4/BLE is the way forward for this kind of stuff really - though it does limit compatible devices to newer stuff. I also note it only has one probe? Sure you could get more than one iGrillmini, but adding facility for more probes in a single unit is really a no-brainer and would add minimal cost to the unit.
I devices are now listing the igrill mk2 little bigger than the mini.... Available this summer it has 4 probe capacity and LCD illuminated readout.....Much better and still cheap