Nearly every off-market property is sold as-is. It is worth being precise about what that phrase does, because it is narrower than most buyers assume and broader than most first-timers hope.
What it does mean
The seller will not make repairs and will not credit you for them. The condition you see is the condition you buy. If a system fails between contract and closing, that is generally your problem rather than the seller's.
It also usually means the seller is not producing warranties about condition.
What it does not mean
It does not remove your right to inspect before you commit, unless you have separately waived that. As-is and no-inspection are different things, and they are frequently conflated.
It does not override statutory disclosure obligations that apply to the seller. Illinois has a residential real property disclosure regime, and as-is does not simply switch it off.
It does not mean the title is clean. Liens, open permits and unpaid utility balances survive the phrase entirely.
The practical consequence
You do your diligence early and you do it properly, because there is no repair negotiation afterwards. Walk the property, get a contractor's view of the scope if you are not confident, and pull what public records you can.
Buyers who are set up to do this quickly are the ones who can genuinely commit to a fast close. That capability, more than capital, is what separates buyers who transact from buyers who look.