> Even with a tip (I have been doing $15/per delivery), it's not much more expensive than normal groceries at Trader Joe's

In my experience its significantly more expensive for groceries: up to 20% for items + service fee + subscription + tip.

I was canceling Instacart subscription and they offered me another year for discounted price ($17). I kept it but I won’t ever extend it for full price given how much more it costs.

I should clarify: I'm referring to Amazon (prime or whole foods), which I understand is significantly cheaper than Instacart. It might be worth cross-shopping in this case.