I stopped using Fresh Direct 4 years ago because they were no longer competitively priced.
I cook mostly from scratch. My shopping cart is 90% "basics" -- veggies/fruit/meat/beans/pasta/dairy, etc.
Fresh Direct is, at a minimum, about a third more expensive, and often more (today on their website they have only organic carrots, at a 100% premium).
I tailor some of my shopping around what's on sale, and since the sale items on FD are much fewer and dominated by non-basics (prepared stuff), I would be spending 50%-60% more to use FD.