A wallet on Polymarket has incurred significant losses due to a poor payoff structure, characterized by capped upside potential and total loss downside. The wallet consistently paid a premium for consensus, with buy prices ranging from 0.51 to 0.67. Most positions held by this wallet offered an upside of 50% to 90%, but carried a downside risk of a complete 100% loss, marking it as the worst payoff structure on the platform.