Put the headline amount next to every material restriction: the base used for wagering, multiplier, game contribution, expiry, maximum stake, excluded bets and withdrawal conditions. A large advertised amount does not tell you how these conditions interact.
Two hypothetical bonuses of 50 with a 20× multiplier can require different turnover. Bonus-only means 1,000; deposit-plus-bonus with a deposit of 200 means 5,000. A game contributing 50% doubles the turnover needed to meet either requirement. Completing the turnover does not guarantee a withdrawable profit.