Originally Posted by
RuneMunki
As has been mentioned every server has a different economy so the actual profit per mine (i.e. discounting the investment cost of the buildings) varies hugely. I am of the personal opinion that an effective gold chain requires a fairly high level player who is committed (or has friends to assist on the buffing) in order for it to be worthwhile. It also requires that they're able to produce all the elements needed to build it and not have to trade. It's no use having to buy the sausages for buffing if they cost you as much as your 'profit'.
What I would prefer to see is gold buildings unable to be buffed, but a gold mine contain twice as much gold ore.