Now through November 30, Amazon Fresh is offering
$50 off on $100 order with promo code FRESH10. It's apparently not limited to Prime members: "Offer only valid for invited Amazon customers who have received this offer directly from Amazon through email or online display advertisements." The $100 order also qualifies for free delivery.
I didn't get the email, but saw the offer displayed on the Amazon Fresh page. I just used it, and I am a happy camper!