Costco On Instacart: Do You Need A Membership To Shop, And How Different Are The Prices? - Tasting Table
Briefly

Shopping at Costco typically requires a membership, but non-members can access goods through Instacart, albeit at a higher price. While this option is convenient, it may not be cost-effective unless a shopper intends to spend significantly. Instacart charges additional fees that, combined with the higher costs of items, can erode savings. However, those who plan to shop frequently may benefit more from the $65 membership, enabling unlimited access to lower prices without the added fees, leading to greater savings over the year.
Shopping at Costco without a membership is possible through Instacart, but it often results in higher costs due to fees and price increases.
For someone without a membership, Instacart provides access to Costco goods, yet you'll generally pay more than the standard Costco prices.
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