bottleofbeer, I don't understand your post.
A lot of economic research is done outside Universities, mainly by banks and consultancies but also Governments and think tanks. Even the letting agent I use has an economist so they can circulate regular market updates and forecasts. At least some of these economist jobs will be looking for applicants with Masters degrees, and more specifically with those who have acquired specific analytical and forecasting skills. The better jobs can pay very well indeed.
There is a gap between what is offered at different institutions, and I think it is unfair to write it off as "snobbery". At one point DS was helping a friend, who I think was at Oxford Brooks with his Masters application, and was surprised at how little technical ground his friend had covered. Employers looking for specialist economists will be aware of this. (Oxford Brooks is looking for maths GCSE 4/C or above, whilst most successful applicants at LSE will have an A* in FM A level - so their first year econometrics will have to start at a different place.) We are lucky that in the UK some masters courses are well recognised internationally, which allows graduates an enormous range of opportunities. The issue as OP points out, is that these courses can be extra ordinarily expensive.
(In their defence, though happy to be corrected, I understand that the employment market for top academic economists is also very competitive and so the cost of running a top notch economics course can also be very expensive - especially for institutions that don't have large historic endowments.)
In terms of funding, I know it was an issue as DS was surprisingly grateful. Others though seems to have managed, including a couple of first generation Londoners whose parents would not have been in a position to help at all. A third friend worked for a year as a research assistant, good experience and presumably a chance to save.
(At times MN seems to assume a binary where people are assumed to be "very rich" or "very poor". We paid but put off replacing our 15 year old car, delayed doing anything about the 30 year old decoration in our house, and skipped a summer holiday. We know we and DS are lucky, but equally made a decision that the bank of mum and dad should support DS get over what is a real financial hurdle. He can save for his own house deposit.)