I would agree with Pursey as far as price. Banking would work better, but I think the main problem is keyword domains are better for small businesses. Most banks are large franchises that rely on direct traffic through their branded domain name.
I would build some kind of banking forum that allows people to complain about their banks, god knows I've over withdrawn numerous times from my bank, and I wan't to blow the place up by the time I leave. People like to complain, give them a place to do so. Then sell...
Good Luck!