I doubt a bank would buy it, as it seems more suited to a general advisory on banking or as a portal etc (and, as you said, there is good affiliate potential there).
Problem is, if the buyers wants it for affilaite conversion - they likely won't be willing to pay all that much for it - maybe $100 if you catch them on a good day (like check day from their affils).
If you are lucky enough to get a bite from an offline body like a consumer protection organization then you might be able to play for $2k-$5k - but thats by no means guaranteed.
