I really don't think there is a bubble at all with Aurora.
Here is why:
Just take Aurora's last Financial Statements and extrapolate them using the same Gross Margins and Sales Price Per Gram. Then multiply that by Aurora's 500,000 Kilo Capacity.
You will soon realize that Aurora will be making a profit of approximately $3.5 Billion per year. At a reasonable 10X multiple, you arrive at a $35 stock price.
Can Aurora sell 500,000 Kilos a year? Based on what I know of the World Cannabis Market - Yep.