If anyone's in Australia Woolworths has ones for under $10 that measure in grams and ml as well as the imperial system. Hahah, there's always cheaper. Oh, this one has the potential to weigh multiple frogs at once because you can weigh something and hit a button to make the weight zero. You could keep doing that and get a total of how much they all weigh when you take them off. Though I'd be a bit worried if someone were sizing up the total weight of frogs...