It's from those markups on sales tax [0].
[0]:https://np.reddit.com/r/boston/comments/5xj47l/ever_what_ins...
[0]:https://np.reddit.com/r/boston/comments/5xj47l/ever_what_ins...
Ouch.
So as long as Instacart can survive with 1% of regular folks shopping with them, they are golden.
I have not noticed a significant increase in prices (other than Tips & Delivery) over my previous weekly spend at H-E-B, but...I seem to have a lot more targeted shopping cart doing it over InstaCart.
No matter what, for the hour+ it saves me, its probably well worth a <20% markup.