Neiman Marcus Group is making investments in its supply chain, technology, merchandise and staff. In gas station retail, fuel is a razor-thin business for convenience store chains and independents, but is also a gateway to more profitable merchandise sold inside. And in payment methods, shoppers tend to favor credit cards online and other options like digital wallets over debit cards, while nonprofits are turning to digital payments, online fundraisers and other tools to keep donations coming in. All this, Today in Data.