If someone needs an example.
Buy 2 instacart GC's from Costco that's $79.99 for a $100 card.
Buy 2 of those. $160 for $200 worth.
And then after rebate you effectively paid $60 for $200 worth of items.
You can shop at target or Walmart on instacart, which both have prices below in store prices or exact same price.
But remember to ask for the receipt from the driver so you can use later to file rebate.
Or buy from Costco and all your purchases from instacart with your Costco membership attached will show up in your instore purchases.
Again, you'll need to group each order with a purchase of $40.
So 5 purchases of $40.
You can have multiple orders from the same store on instacart.