Manipulate bitcoin market is not cheap at all because you are trying to manipulate a market with $854,777,215,245 capitalization, so, even if you join with $1million, $10millions or $100millions, it will be not enough money to make a big difference in the prize.

A good example that we have of market manipulation is what Elon did with Dogecoins, and looks like SEC gives zero fucks about it. So, people don't have to worry about this.