We've got 5 sausages to a jar over here, would go great with your 11 hot dog buns!
I've always wondered why sell that as a prime number, surely it can't be worth it to annoy your customers to sell them an extra sausage? Anyone introducing a reasonable amount would capture more purchases.
Or bags of bread with an uneven number of slices. Why are we inflicting this on each other?
also, what a terrible state of affairs for obsessively-minded people. that we cannot even out buns and hotdogs.