Various proofs are brought to support Shmuel’s opinion that fraud percentage is determined based on the market price and also on the amount actually paid. \u00a0Two are rejected and one is accepted. \u00a0The mishna discusses only the percentage at which there is fraud. \u00a0What happens if it’s less than or more than? \u00a0If it’s less, we assume the parties agreed and they cannot get their money back. \u00a0However the gemara questions whether they also have a window of opportunity where they can get the money back that they were overcharged. \u00a0If they were overcharged more than \u00a01\/6, the deal can be cancelled. \u00a0But again, is there a certain time frame in which that can be done or is there no statute of limitations? \u00a0The gemara tries to answers there questions from our mishna but in the end if unsuccessful. \u00a0Then Rava paskens and explains both the answers to these questions and also brings an alternative psak to what our mishna held regarding fraud (at 1\/6).<\/p>\n