In many cases, yes. Some low-carb cookbooks include a section on budget-friendly substitutes. If your cookbook doesn’t have one, you can look up alternatives to specific ingredients online to make sure they’re low-carb friendly. For example, kale is pricey because it’s in demand, but right next to it in the supermarket, you can find turnip greens, chard, and spinach, which are also packed with nutrients, at a fraction of the price. Another method is to plan weekly meals using recipes that have lower-cost ingredients.