That is, you can make niche highs just as you can make niche wine flavors.
Now perhaps once the major PR and ad companies get behind the concept we'll see luxury pot brands charging premium prices, and perhaps we'll even see pot snobs who look down on anyone paying less then $15 a joint. With the right marketing campaign you can sell basically anything for basically any price, so I suppose the $500 oz. will probably become a reality if pot is fully legalized, and there will no doubt be plenty of suckers lining up to buy it.
In fact, I was probably wrong when I said that legal pot won't see the same prices as high end wines. The reason we haven't seen those sorts of prices is because the semi to illegal nature of it has meant a lack of fully protected brands and trademarks and advertising. Once we have those then there will be real money to be made.