Carmax has a generous new return policy. You have 30 days now to drive that used car before you are stuck with it for good. Carmax and Carvana are reaping the rewards of being more consumer-friendly.

Food delivery apps can cost you an additional 40%. Clark says that you should opt to order directly from your favorite restaurants and choose to pick your food up instead of using the major apps. This saves you money and keeps more of that cash in the restaurant's hands as well.

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