Costco just launched its monthly instant savings lineup, and there are some huge fan favorites on the list. From April 9 to May 4, members can get certain grocery and household items for a great bargain, both online and in warehouses. From children's protein shakes to name-brand coconut water, these items are must-haves on your shopping list, even if they weren't on sale. Costco's original prices are competitive, but the sales prices are a steal. Here are the seven best Costco products to stock up on right now.

Rao's Marinara Sauce (28 oz, 2-count) is on sale for $10.40 down from $13.40. "I love Rao's because it's not sweet. So many of the jarred sauces are so sweet I can't stand them (looking at you Prego and Ragu)," one member said. "As someone who only ate pasta and sauce from 19 to 32 almost nightly, Rao's is my go to," another agreed.

A container of Cascade Platinum Plus Dishwasher Detergent ActionPacs (82-count) is on sale for $24.49, down from $29.49. "Cascade platinum pods are the absolute best pods I've ever used. They cost more than purchasing something generic, but it's worth it to me," one Redditor shared.