Spend $20 on Giant Microbes and Get a Free Thermometer.
The Giant Microbes thermometer is listed for $12.95. The plushies seem to start at $3.88 for the minis and $8.95 for the regular (ha!) size ones.
For a limited time and while supplies last, spend $20 on Giant Microbes and receive a free Giant Microbes thermometer. Discount will be applied at checkout. Here's how (restrictions apply). You can take advantage of FREE Super Saver Shipping (restrictions apply) and Prime (restrictions apply).