Generally u can tell the time wasters. We have sold so many cars and sometimes u think this guy is just wasting my time, but then they end up buying it.
I normally come across as a time waster so I don't seem too interested and that way I can negotiate with them.
But if some guy sent me that msg I would tell him " EVEN IF YOU LICKED THE SWEAT OFF MY BALLS I STILL WOULDN'T LEND YOU THE CAR"
But yeah it's sometimes a bit hard to tell