cost to cure is the cost to rectify or correct.
it is not out of line to ask a seller to correct items not in their disclosure that they should know about. faulty wiring on a garage door opener they installed, or a faulty vent on a heater or water heater they had work done to. they may say no, but there is no harm in asking and it is a good idea to decide among yourself what items you see as non-negotiable. other items might fall into the "who cares" column.
please note that most inspections will turn up lots of stuff that is not to current code, but which are perfectly legal when built and also safe by and large. examples might be electrical systems, firewalls, garage door openers and such. most inspectors practice "anus protectus" and cite many items that in a perfect world are good ideas, but which are really there only to cover their liability.
your question implies that you are in an "as-is" sale but that does NOT preclude you from making requests for repairs or killing the deal for discovering stuff you are simply not willing to accept without some sort of compensation.
be sure to discuss also with your agent what the contract says...just because the seller says he or she will not make repairs doesn't mean that they haven't already bound themselves to do so regardless of what they say now. termite repairs are a classic example of this item.