20ths are very hard to come by. I got lucky, called my local on Monday and they said they would be there in an hour. I got there in 40 minutes and they had just showed up. 3 total boxes. Sign said"limit of 1 per day". So, I grabbed one from each box (three different sizes). Then he said "no, just one total". He did let me get 2 total. Not sure if he has anymore or not.