So ... I found out today that the Instacart markup for Costco using the Instacart app are twice as high as using the Costco website. It makes sense, since you do have to have a Costco membership to use the Costco website. But this doesn't seem to be widely known. I don't love any markup, but on some items the Costco price with markup is still better than Sprouts without a markup, because of bulk pricing.
Also, I did an Instacart Sprouts order today, going in through the Sprouts website instead of the Instacart app -- and I was allowed to use the current $10 off $75 coupon, plus two other digital coupons, 75¢ off 3 avocados and $1 off Earth Balance (for the dairy allergic kid). I chose curbside pickup and there were no fees at all, and no tipping. Sprouts's in-house shopper did a much better job choosing produce (the order was 90% fresh produce) than any "full service" Instacart shopper has ever done. Unlike Target, nothing was missing. In store shoppers are actual employees, from what I understand, some stores use Instacart employees and some use their own. The text I received said a Sprouts Farmers Market Associate was shopping for me, so maybe it wasn't an Instacart employee.
I didn't buy anything to hoard from Sprouts, lol, but this week I did order TP (we have an old house and need paper that dissolves easily) and our preferred medium grain rice from Walmart. I ordered paper towels from Target. I don't want to hoard, but I also don't want to end up not having what we need. Oh, I also ordered meat from our local--ish grass-fed beef rancher, since he had rump roasts half price. That was a stock up.