costs of organisation?!?!?

[Roninho]

Hi,

for over a decade i've been following motorsport and i have seen many new series enter and leave the scene (with superfund the last to (possibly?) exit).

Since i find it strange that almost no serie is a big hit, I was wondering what big expenses do these series (let's say a high profile F3 or a days of thunder (or whatever it's called nowadays)) have and what does it cost for these organisations to run.

I figured these items they at least incur:

own organisation: ?
track rental: 3 days x $10.000?
officials: 3 days x 50x$50
tv production costs $ 50.000 ?
tv airtime? ?
price-money ?
promotion ?
vip hospitality ?

etc?

thnx,

Roninho