This has always struck me as an obvious solution, but almost no one does it. I'll definitely send e-mails out to some local breweries and bring it to their attention. Drake's charges $10 for the same form factor as RR, don't they? I imagine SOME profit is involved. They can be reused. I have multiples because I generally buy the growlers and ship them out one-way. Sometimes my trading partners return them in bulk. Counting what's in the fridge and what is returning to me, I'll break 30 before the end of the month.