Money??!! I have never met a poor gypsy.
They either earn their money with completely illegal activity (protection rackets, thieving etc), or sometimes legal (scrap/horse dealers/ owning caravan sites/ builders etc), but they very rarely pay tax, and more often than not are on benefits and working at same time. Often they claim at the benefits office that they cannot read, and get someone else to fill in all the forms etc. More often than not they can read, but find it easier to claim they cannot.
I used to deal with gypsy's, selling them haylage, and renting land to them for their horses etc., and always found them to be very fair, and pay up in cash. The gypsy's I dealt with were all part of the same clan/group, it was by word of mouth. I rented some land to one gypsy, and then other members of his extended family. I was advised not to deal with more than one family, or it can cause fighting/trouble. You have good and bad ones. I never had any problems, and never had anything stolen.
My brother is a vet and he has been to treat their horses on these sites, and has always been paid there and then, and found them to be good clients.
I think more could be done, to make them earn their money legally, but people are too scared to confront them on where their money comes from. I certainly never asked.