I doubt it will take long. People are willing to pay higher prices for better product. When I was in college I purchased the 10 dollar handle of bad Vodka because that was all I could reasonably afford. 10 years later I would never touch the stuff and only drink high quality whiskey. The same reasoning would apply here especially because it's grown for medicinal purposes, you don't cheap out.
I continue to be impressed with Tweed and look forward to what the future holds for this newborn company.