Doubts

[SimplySimon]

Narf and cracicot are right, the tactic works with inexperienced players. Also worth noting that if a player puts multiple bids in just before and just after the start/end of a round you can sometimes beat them because they are burning tokens (you only need one bid per round). I beat some players who make three bids at the end of, say, round 2 and I pinch it end of round 3

Another trick is to bid early for a few rounds, then after 3/4 bid right at the end when they think you have stopped bidding

All bidding 'tactics' are known by experienced players, but at low levels they will still work. I just assumed you were a lower level player and gave examples for that. I would say it works up to Level 3 bidders. Always the best players have highest competition so you may just have to aim lower and train up