ok, here's a list.. this is what I have done at school, planning the whole festival..
this is a BIG venue (5000 people).. and its a festival, and a charity thing, so we didn't want to give the artist a lot of money for their performance,
but just so you can see, cuz you'll probably need these kind of things anyway.. like the venue and electricity.. and don't forget the catering, security, light, sound, toiletpaper, meeting costs.. ect ect..
Venue 22,500.00
Electricity 2500.00
Artists 40,000.00
pre production promotional costs 10.000,00
promotional costs
tv campaign 5,000
other media 5,000
crew (many volunteers) 8,500
extra indirect costs 1,300.00
plus a few other costs, lets say about €106.000,00
excluding hotel and the plane tickets.. you'll probably get some discount when you book many hotel rooms at the same time, and when you buy many plane tickets.. but I've no idea how much that will be..