I can afford the upkeep but do not see overpaying in the beginning to acquire the car.
It is difficult to understand completely how to answer you.
As Night says, Buying the car isn't the problem, it's keeping it then getting 'rid' of it.
Having said that is why some cars seem like bargains in low, initial price, but then it starts, as the previous owner may not have done the upkeep/maintenance, leaving that to the next owner which, actually, brings the car into correct balance on the 'initial' price: There are NO BARGAINS in Exotics.
Rare is the 'barn find' or the liquidation sale, though, honestly, there ARE more and more these days. BUT, if sold at a bargain, one would honestly realize the owner did NOT do anymore maintenance or they would be able to keep it.
That $70K 360 is nuts IMO. That is way too low. Something is amiss, and a proper inspection would let you know what 'might' and I mean might, be on the way.
IF you can get someone to PPI it. Go to a good dealer. Or buy the car you can afford and still want. You'll be pleasantly happy you made the right choice up front. EVEN the best choiced vehicle can be a problem: Ask me how I know ... I've got stories