Voting for the location of the CIS-2107 tournament.

That's where you saw these prices, and I'd also like to say that you can travel not only by plane))))
2200 for a one-way trip, i.e., a total of 5000 rubles
accommodation 10,000 rubles
banquet 2500 rubles
cinema 3500
meals (full board) 5000
Total - 24,000

Rattling around in a train for almost four days for 5k in a sleeper car, no thanks.
You should also suggest to the Siberians to take a train to Volgograd :D
And it's not about being soft, it's about time.

If tickets from Yekaterinburg to Moscow cost 5-6k. And tickets from Moscow to Volgograd cost 5-6k. Then the total will be 10-12k. Well, that's just a little arithmetic.

Yes, indeed, cheaper tickets have appeared. Although the day before yesterday, a one-way ticket cost 7.3k
Now, round-trip tickets cost 13k
https://avia.yandex.ru/search/result/?fromId=c54&fromName=%D0%95%D0%BA%D1%82%D0%B5%D1%80%D0%B8%D0%BD%D0%B1%D1%83%D1%80%D0%B3&toId=c38&toName=%D0%92%D0%BE%D0%BB%D0%B3%D0%BE%D0%B3%D1%80%D0%B0%D0%B4&when=2017-05-06&return_date=2017-05-13&oneway=2&adult_seats=1&children_seats=0&infant_seats=0&klass=economy&lang=ru

Still, it's the budget for Volgograd
10 + 2.5 + 3.5 + 5 = 19k - accommodation, food
13k - tickets
13k - personal expenses
Total 45k

If you take Korolev as a minimum
7k - accommodation
4k - food
6k - tickets
13k - personal expenses
Total 30k

It differs by 50%, by 15k