I just got another technology card - The Fully Automated Brewery. What it does is it doubles BEER production. I already have one brewery in my city but it doesn't seem to do anything. Maybe it needs more than one to make a meaningful impact.
Anyway, I have placed three bids at between the current Bid/Ask spread so if there is anybody who is serious about selling their brewery card, please do consider. It is more than the 800 that the card would have cost so you make a profit at least.
Come to think of it, my 5x Weed Dispensaries aren't producing any tokens either. At least the Casinos are and I'm receiving a stream of Gamer tokens as well although the dollar amount isn't much.
If anyone has experience with beer production on DCity - is it worth it?