TomTop offers this Digital Thermometer and Humidity Meter in Black for $4.59 with free shipping. (Choose "Standard Shipping" at checkout.) That's the lowest price we could find for any color by $3. It features an LCD screen, °F or °C temperature measurement, 32°F to 122°F temperature measurement range, 20% to 95% humidity measurement range, temperature/humidity trend display, and daily low and high display. It can be mounted via its magnetic back, wall hanging hole, or tabletop bracket. Two AAA batteries are required, not included.

Note: This item ships from China and requires 7 to 15 business days for delivery. The countdown timer on the product page does not reflect an actual expiration time and resets daily.