Kitedemon, he said his thermostat is in the mail, if you read the post. As far as I can tell this guy has done everything right.
As for the variability in the thermometer, I wouldn't worry overmuch about it. He's not incubating eggs. Even if the hot side reaches 94F when the thermometer is reading 90F, his snake is not going to get burnt, and that's the most important thing. If the battery starts to leak, then perhaps OP could consider a different brand, but surely not every accurite thermometer is destined to leak battery fluid.
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