If the coin is trading at whatever price (say $100 a piece), you can leverage by 100x doing this: - Put $100 as deposit. - They borrow you 10k to buy 100 shit

If the coin is trading at whatever price (say $100 a piece), you can leverage by 100x doing this: - Put $100 as deposit. - They borrow you 10k to buy 100 shitcoins for $100 each (instead of 1 you can really afford), so 10k of shitcoins with the condition that if the coin price falls below $99 your position is liquidated and you lose all. Note that there's no seller saying "the coin is worth X", it just trades at that price.