Did a tour of Delirium in Belgium, was only like 10 euro and you could have as many beers at the end as you wanted. Of course it was all spoken in Flemish but it's pretty obvious what they're talking about.
One of the best value for money drink tours was the Schnapps museum in Vienna. Was just a small/short private tour (but still inetresting) and cost 6 Euro. And at the end, you went to a bar lined up with about 6-7 different shots of various things (including one called Rocket Fuel and some shots of Absinthe).
If you ever need your throat/nose cleared out fast, try the Rocket Fuel. Clensed with fire!
I did the XXXX tour in Brissy last week. Was pretty good. It's $25 but that includes four pots at the end of whatever you want (James Squire also on tap, since it's owned by Lion Nathan) so it's good value.