How much actual funding does a Marie Curie fellowship entail? The EU has a research fellowship program named after Physicist Marie Skłodowska-Curie. The website lacks a bunch of information, but I'm specifically interested in understanding what kind of funding it actually provides in the Individual Fellowship (IF) track. The linked-to-page says:


  The grant provides an allowance to cover living, travel and family costs. In addition, the EU contributes to the training, networking and research costs of the fellow, as well as to the management and indirect costs of the project. 


If you've received such a grant, participated in fund allocation, or saw the "books" at a hosting institution, I'd like to know more about what amounts of money they're talking about.

Specific points you could elaborate on:


Is the funding a lump sum? Per-year? Per-month?
Is the host institute's part figured as a percentage of the overall funding? Independently of it?
Do the applicants (individual + institution) ask for certain amounts, or does the program set them?
If it's the latter, what are the fixed amounts? Or the criteria for setting them?
Can you give a specific/typical example (no personal identifying information please) of the amount of funds some researcher, and their hosting institute, have gotten?


Obviously - no need to address all of the points.
The website has a bunch of information if you look in the right place, in the applicant guide. All your questions are essentially answered by this paragraph:

The living allowance is the EU contribution to the gross salary costs of the researcher and amounts to EUR 4,880 per month. It can only be used to this end.
This amount is adjusted through  the  application  of  a country  correction  coefficient (CCC) for the cost of living according to the country in which the beneficiary is located. For the outgoing phase of the Global Fellowship, the country correction coefficient of the TC partner organisation will be applied. However, the adjusted amount will not change in case  of  secondments  to  a  partner  organisation  in  another  MS  or  AC.  The  country correction coefficients that will be applied are indicated in Table 1 in Part 3 of the Work Programme (Marie Skłodowska-Curie actions).

I'll let you read the rest. There is also a mobility allowance of 600€/month and a family allowance of 500€/month. There are also a few annex costs. Bear in mind that this is a gross amount.
I didn't search for the Work Programme (it's somewhere online, I imagine), but in France, the resulting net salary is around 3000€/month, which is extremely good for a postdoc; to give an idea, the median net salary for employees is 1789€ nationwide. I have a few friends who got or supervised postdocs like this in several European countries, none of them had to complain about the salary, quite the contrary.