We started off donating $5 per 700mil bottle sold but now we offer different sized bottles so we are changing to 5% of overall revenue which is an increase over the $5. 

So far we have donated over $4,000 to deserving cases, mostly greyhounds to be fair.

BTW even at our prices 5% of revenue is about 25% of profit - it's a hard job making hand crafted gin and vodka from scratch!