just a quick point of interest in your calculations - people who go to aldi for liquor aren't connoisseurs, nor are they likely to be after a $15/20 bottle of wine. Aldi trade on the premise of convenience, and price. a shopper looking for a $20 bottle of wine is not likely to go to aldi, that shopper will got to dan murphy/first choice. an aldi shopper will be looking $10 and under for wine. anyone spending more than that will likely be an incidental purchaser, with little wine knowledge, and have little chance of repeat custom. i would suggest an average bottle price at aldi to be around the $5 to $10 price.
Aldi also do a lot of 'unknown' brands for australia, these are brands bought overseas for cheaper than what an australian brand can be purchased. An aldi shopper is not looking for "greenseas tuna" they are looking for "tuna". when it comes to wine, people at aldi arent looking for "penfolds", they are looking for "wine".
DW8 Price at posting:
14.5¢ Sentiment: Buy Disclosure: Held
(20min delay)