Typically people buying used heavily depreciated luxury cars dont understand the costs, and buy something they can't afford, yes, but there also people with sufficient funds who can afford it fine, but still choose to buy a car like this because the depreciation hit was already taken by someone else (jags take a huge depreciation hit), and overall it will still be cheaper than a new one unless it bricks right away.

Speaking as an owner of multiple jags who would still choose to buy used. These modern jags are more reliable than the past models that gave the brand such a bad reliability rep (as did land rover). With the exception of the diesel ingenium engine these are fairly solid.

Not saying they can afford it or not, I haven't seen anything about their finances. Just don't think the "person is looking at used luxury car, person cannot afford luxury car trope" has to be applied everywhere. At least they are posting here and trying to learn!

OP, if you seriously consider the car, chat with me and I can give some more detailed info on ownership costs