I can't do Europe, but I can do stateside.
Event location rental: $40,000
Event Officials: $40,000
Setting up Fields (labor, per event expenses): $8,000 per field
Setting up Fields (amortized equipment costs): $1,000/event/field (figure 2 year useful life out of a $10,000 field cost with netting, poles, etc)
Player/Spectator Liability Insurance: $5,000
Tents: $40,000
Tables/Chairs/Fire Extinguishers/Etc: $5,000
Bleachers: $30-$50,000, depending. I would guess PSP is usually closer to 30 and NPPL usually closer to 50, but it can vary quite a bit from location to location, anywhere from $6 to $16 per seat.
Event Staff (non-salaried): $20,000
Credit Card Processing: 3% of revenue. (Zero if you go the NPPL route and charge people for it)
Travel for you to go to, survey and secure the site: $2,000
Lawyer to proof the site contract: $1,000
Hotels/Food/Travel/Etc for your key staff: $10,000
Renting generators, lights, lifts, golf carts, etc: $15,000
Vehicle insurance (covers yours and rented vehicles/equipment): $1,000
Transportation of all your **** from the last event to this one: $4,000
Air: $10-20,000k (getting it there, fuel for it, keeping your compressors clean and working)
Scoreboards (if any): $800/board/event (amortized expense if you have cheapie ones, more than $800 for more expensive ones)
Prizes: $100,000
That's some of the per-event costs, which got me up to $360,000-$400,000, and I'm sure I'm not thinking of everything. Like just now realized I didn't think of portajohns or trash removal or tent permits or palm-greasing.
Then you gotta put on fixed cost like office expenses, owning assets like trailers, etc, taxes, and most impotantly full-time staff. I'd guess a Shawn or a Lane runs $80,000/year if they get paid a deent amount and are able to provide typical benefits like health insurance for themselves/family, figure a Keely or Camille is $50-$60k. Then you've got your Phils/Dans/Tims/Mikes/Tonys of the operation.
This also assumes that nothing breaks or gets stolen and ignores equipment like chronos, robots, radar guns, printers, etc.
A good estimate is that an event costs about $500,000 to put on, after factoring in fixed costs like staff salaries that need to get spread around all the events. To put that in perspective, PSP took in $307,900 in entry fees for Vegas and NPPL took in $466,600 for Tampa.
Hrm, never added that up before. That means PSP is giving away 42% of its entry fees as prize money and NPPL only gives away 20%.
Regardless, those entry fees are obviously less than event costs; if the series is doing OK the rest mostly gets made up from vendors.