Forex names can earn decent money, although its an extremely competitive market.
The downside to this domain is that it is focused on just australian currency pairs, so might be too specific for many and still has medium to high competition keywords. Personally I love trading this particular currency as it isn't as volatile as some others and I think is a great currency for people new to forex to focus on (Not an easy currency to trade by any means).
From a development point of view, some potential here, placing charts and quotes for AUD currency pairs as well as an rss feed bringing in news that will affect this currency as well as trading information and analysis.
I personally like it, but not sure it has great value, maybe mid to high $xx ??. A hard one to put a value on.