If you're a bargain-shopping keto eater, your nearest warehouse store may be a blessing. The wide selection of keto-friendly foods, plus a broad range of vegetables and meats certified for keto, let each penny of your annual Costco dues pay for itself over and over again.

Hass avocados

At Costco, you have to buy in bulk, which is part of the appeal. But keto eaters should have no trouble working their way through a six-count bag of Hass avocados.

Avocados are important for a keto diet because they are an outstanding source of healthy fats. Prepare them with morning eggs, cut and served on the side of every meal, or even made into a decadent and fluffy faux chocolate pudding.

Wilcox Organic Hard Boiled Eggs

Thanks to its hefty helping of good fats and a hearty chunk of protein, eggs are perhaps the perfect keto meal. You can buy a pack of 12 at Costco for just under $8 if you don't have time to boil your own dozen per week (or every few days, depending on how fast you're eating them).

Kirkland Organic Unsweetened Vanilla Almond Milk

Dairy, including cow's milk and yogurt, contains a lot of nutritious fats and calcium for your diet, but due to lactose, a naturally occurring sugar, it is also an unexpected source of carbohydrates. Skip the cow's milk carbohydrates and instead go for almond milk. Unsweetened vanilla almond milk is a perfect option for collagen shakes or even when the craving for a cup of ice-cold milk arrives.

Hampton Hills Petite Asparagus Spears

Keto dieters need to be careful with their selections of vegetables. A great option is asparagus. There are just four net carbs in one serving of these, but it also provides a healthy balance of vitamins A, C, and K. Make sure to check for frozen asparagus that is plain,

Rhythm Superfoods Roasted Kale Sea Salt

You're not going to be eating a bag of chips on a keto diet, but you can definitely munch on these roasted kale chips. A keto-approved leafy green, the Lacinato kale leaves are washed and roasted with a bit of oil and seasoning. There is just one net carb in a single serving bag, but it also provides four grams of fat, plus a day's worth of vitamin K.

Organic green beans

Like asparagus, green beans are a perfect source of keto-friendly fiber and vitamins. For a Niçoise salad, chop green beans, sauté them with riced cauliflower, or roast them whole. The two-pound bag of organic green beans from Costco is trimmed and ready so that you can save kitchen time.