If you own a restaurant in Wisconsin, you already know the math is tight. Food costs are up. Labor costs are up. And somewhere between the line cook and the linen service, credit card processing fees are quietly eating 2–4% of every single transaction. For a restaurant doing $50,000 a month in card sales, that's $1,000 to $2,000 walking out the door — every month — just to accept the payments your customers expect to make. There's a better way. It's called zero-fee processing, and Wisconsin...