>>280196814
Hive trackers circuit board is the size of two LR2032 coin cell batteries. It uses a coin cell battery as well to operate and gets like 12 hours or something crazy like that. 
>>280196812
Why are you buying it in your country then? Buy it on amazon from someone who ships internationally like BHphotovideo. 
Don't spend money on exploitative business practices. Maybe consider shooting them an email and asking them to price match. Biz aren't opposed to haggling most of the time.