I was just checking the new offers on my American Express card and I noticed one today for Thermoworks. I know Amex offers are YMMV, but it's still worth checking your card to see if this offer is available.

Here are the terms from the Amex site:

DETAILS
Get a one-time $15 statement credit by using your enrolled Card to spend a minimum of $75+ in one or more transactions online at thermoworks.com by 8/22/2018. See terms for exclusions.

Thanks,
Pinny