@killing-spread_nl DON'T BE CONNED BY NEW EVENT
Don't know where you get the figure of 760 Boss coins from but appears to be on the low side. As additional training is extortionately expensive for the benefits received, why are managers even bothering to play a part.
If all 4 teams are in operation over the 4 days of this promotion, then a maximum of 48 standard training sessions will be completed (4 teams x 3 training sessions per day x 4 days costing 48 boss coins) . That is assuming that you can set up training every 8 hours, which most people can't because of work or school and sleep commitments.
Therefore, to gain 150 training sessions, a further minimum of 102 sessions must be purchased. Can't recall actual cost but must be at least 16 boss coins per session (as it costs 16 coins to upgrade with 7+ hours remaining of the session - most likely 17 or 18 boss coins per session) For the exercise we will use only 16 per session. Therefore, 102 additional sessions x 16 boss coins per session = 1632 boss coins. Add 1 boss coin as cost for standard training session, the grand total is a minimum cost of 1680 boss coins less your 'win' of 100 coins.
So for all of those managers that have been conned into this training frenzy, the cost in hard cash will be a minimum of EURO11.70 or GBP10.63 if you had bought a Boss pack of coins. If you had purchased the pack described as "Popular" (Euro19.99 for 2350 coins) it would equate to a cost of Euro13.44 or GBP12.18 .
All those taking part will lose out, even the winner!!!!!
Only benefits are that some of your players have increase skill levels and increased their transfer values. That may be enough to tip a match result in your favour, but is questionable given the strange calculations used by the match simulators.