PredictIt, IIRC, also has limitations on total bettors on an issue, and amount an individual can bet in total and per issue.
Those constraints can produce odd results. Say, if the market was “full” of investors so no one new could enter, and also had reached a point where the people who weren't irrationally holding out expectations of Trump has already maxed out their positions, the only available trades would be between relative dead-enders.
Plus it costs money to withdraw funds from the market (5%, from another comment), so it looks like even if you could get in, you could actually only by 95¢ for 96¢.
Those constraints can produce odd results. Say, if the market was “full” of investors so no one new could enter, and also had reached a point where the people who weren't irrationally holding out expectations of Trump has already maxed out their positions, the only available trades would be between relative dead-enders.
Plus it costs money to withdraw funds from the market (5%, from another comment), so it looks like even if you could get in, you could actually only by 95¢ for 96¢.