And as I wrote before it’s mathematically a bad move, unless the offer reaches its end (and then it’s a good move)
V being the market value of the item, S being the scam value of the offer, p being the chance to win the lottery (and at the same time the ratio of tickets he bought, if the lottery is not rigged)
the function V+ (1-p)×S is decreasing with p, therefore you want to have p the lowest so 0 if possible).