: Warehouse clubs offer the lowest per-unit prices (Costco can be ~21% cheaper than Walmart). Online orders are typically handled through Shipt or Instacart, which may require a membership or include service fees.
For buying cheap food online in 2026, is consistently ranked as the most affordable national retailer for grocery delivery, followed closely by Amazon Fresh and regional options like Lidl and Aldi . While discount stores like Aldi offer lower base prices, their online presence often relies on third-party services like Instacart that may include markups of up to 14%. Top Online Grocery Retailers for Budget Shoppers where to buy cheap food online
: Highly competitive for Prime members, offering a massive selection of low-priced staples, including the 365 by Whole Foods brand. Non-members can also order but face delivery fees ranging from $7.95 to $13.95. : Warehouse clubs offer the lowest per-unit prices