New Building: Market

I’m proposing a new building: The Market

In the market you could trade food gold.  The purpose of this is sometimes I’m on a business trip, and I’m too busy to fight, but I have food I’m literally just throwing away.  Usually with 200 bread I get about 400K gold via battle.  So I’d build in a step punishment for not playing, but maybe you could trade 200 bread for 100K in gold?