(1) Store gets to guess on what to do if your item isn't actually in stock - you can provide a bit of guidance, but sometimes the replacement is bad.
(2) Sometimes groceries get delivered with really aggressive sell-by dates (like one lb of ham slices that's got 3 days of shelf life left)... happened on a Safeway delivery.
(3) Occasionally I thought I clicked through and didn't, and other times one of my credit cards has a hold (fraud alert) or has been cancelled (thanks Target!) and the account still has it. (this happened a couple times with Google because they don't charge your card until your delivery is on the road).
Strangely I haven't noticed a significant price increase vs. shopping at stores.
For #1, I usually just do no replacements unless I definitely would want either the first choice or replacement. It also depends on who does deliveries. When I got Safeway delivery directly, it was messed up all the time by the shoppers (probably the biggest downside with some services), but Instacart was generally very good about following my preferences. Of course, with no replacements, you might end up without some important ingredients so that can definitely be a problem still.
(1) Store gets to guess on what to do if your item isn't actually in stock - you can provide a bit of guidance, but sometimes the replacement is bad.
(2) Sometimes groceries get delivered with really aggressive sell-by dates (like one lb of ham slices that's got 3 days of shelf life left)... happened on a Safeway delivery.
(3) Occasionally I thought I clicked through and didn't, and other times one of my credit cards has a hold (fraud alert) or has been cancelled (thanks Target!) and the account still has it. (this happened a couple times with Google because they don't charge your card until your delivery is on the road).
Strangely I haven't noticed a significant price increase vs. shopping at stores.