MOL got his 189 seat aircraft at rock bottom prices
Ryanair bought favourably because everybody else not interested in buying, they bet the farm.
Of course the fact that the dollar has tanked in the last 10 years has helped as $1 was worth €1.22 at its highest and now worth €0.78.
Means you get a massive benefit as Boeing sell in $ and a €25M plane cost €30M when Euro weak but €20M when Euro strong.