Even if the thing is in fact totally buggered it'll be worth at least half of the "generous offer" as it stands (note, at least given it's a prius).
Tell them to get stuffed, get it home, get someone trustworthy to look at it then if they believe it to be knackered too stick it on ebay with an exact description of the problem(s)
Then go about buying something you actually want, financed whichever way you choose and taking your time about it.
Tell them to get stuffed, get it home, get someone trustworthy to look at it then if they believe it to be knackered too stick it on ebay with an exact description of the problem(s)
Then go about buying something you actually want, financed whichever way you choose and taking your time about it.