They steal tokens. Plain and simple. Till yesterday i never did buy not a single tokens, and i never have problem with bidding for a decent player ( i always spent on them 2-8 tokens, and almost never loose). Now then, today i bought tokens for the first time, and my first attempt to buy decent player result in bidding war, in which i loose all of my tokens and i even didn't get player. I got a feeling that AI bidders just sit in some dark corner, and wait for those who are willing to spend some cash on the game just to take them everything so they spend money all over again.