I can’t access “The Rounds” website to understand their value proposition (probably because I am based in Europe, and I don’t have a controllable VPN on the work laptop).
From what I can glean quickly from other sources, it seems to be regular consumable grocery/CPG retail products delivered at a fixed time weekly. Well, they aren’t unique, at least not in the UK (some areas still get doorstep milk delivery with an ability to add other products to a regular order, e.g. Muller Dairies milkandmore.co.uk; and veg box schemes that deliver fixed time weekly like riverford.co.uk–I personally use the latter).