I admit that location of it is a little hidden being you have to mouse over the character portrait, but room is a littled limited! Sorry about that. As for the current key situation, there was a small bug where shift-clicking to buy keys would actually spend 12 Gold, so I removed from them vendor. Starting in next patch (1.02) all new characters will start with a stack of keys capped at 500, same with any Keys that monsters drop in the future. Thanks for the suggestion!