YABVVU.
In the past (I'm currently too ill to work) I have had jibes arising from a combo of nature of then job (telly presenter), big house, 'posh' sounding name, and a lifestyle that others could reasonably deduce meant there was significant cash involved.
It used to piss me off no end and I HAVE had to actually use that phrase; ironically including to my then ILs at a point when I was taking them and entire extended family on now ExH's side to villa in Cannes for ExFIL's 70th birthday (IE when my income was directly to their benefit).
In some bizarre parrall universe, they thought the fact I could afford it somehow devalued it as it was 'easy' for me 
It got to a point where I had to spell out in no uncertain terms the council 'b&b' terrifying hovel full of predators I'd spent a large part of my childhood in; the fact I was removed from formal education at just 14; the fact that I had worked my fucking backside off to get BACK into education and that the very holiday they were on (which cost me c.£20k for all of them) was solely as a direct result of my working my arse off
initially in my chosen career, and then by building a telly/media career on back of my expertise in said area (it was the PR gigs based on the telly profile where I earned seriously high cash; unless you're a Holly or a Davina the actual day rate for filming per se is much lower than folks imagine it to be IME).
[BTW, the stealth boast vis £6k pm was unnecessary and makes your OP even more U so here you go - my day rate at point I had to stop working was £5k per day; how d'you like THEM snapples OP
]
Don't know if it the fact I'm macro ill or micro due on but your OP, and the memories it brings back of other's twattish beahviour, has seriously riled me