As one of its daily deals, Groupon offers the i-Spy App-Controlled Camera Tank
with free shipping
. That's $18 under the lowest total price we could find for such a spy camera tank. (For further comparison, we saw a similar tank for $85 shipped three weeks ago.) Sales tax is added where applicable. This tank can be controlled by an iPad, iPhone, or iPod via a free app. It features built-in wifi, a 66-foot signal range for transmitting live video, and it requires six AA batteries (not included). Deal ends January 30 at 1 am ET.