Great Brands USA via eBay offers the Seek Thermal Compact Thermal Imager for Android, model no. UW-AAA, for $169.99 with free shipping. That's the lowest total price we could find by $40. It detects temperatures from -40° to 626° F and features a 36° field of view, 206x156 thermal sensor, Chalcogenide lens, and up to 1,000-foot viewable range.