Let's say my home would sell on the open market for... $260k. Got an offer from opendoor indicating they'd offer me $240k, but then I also had to factor in another $13k for their estimated repairs, so my final 'in my pocket' amount was $227k. That's a non-trivial diff, because I could likely have gotten closer to $260k on open market, then negotiated $10k or so with buyer (to get needed repairs in place by sale date).

You're paying for convenience, and while I didn't find the opendoor written offers completely confusing, it did seem a little... misdirection-y.