Grand Theft Auto V Legacy

Premium currency

You do not pay in euros, you pay in gems, so you lose track of the real cost.

Evidence: Wikipedia (es): «El jugador también puede comprar dólares GTA con dinero real, y este será depositado en su cuenta bancaria virtual, usando las llamadas tarjetas tiburón que pueden ser Tigre, ballena, toro, gran tibur» · Wikipedia (en): «Another technical patch was released on 10 October combating the issues, and Rockstar offered a GTA$500,000 (in-game currency) stimulus to the accounts of all players connected to Online since launch »

Paid loot boxes

You pay without knowing what you get. The good stuff is rare, so you pay again and again.

Evidence: Wikipedia (es): «Lo destacable de está actualización es que el contenido disponible del casino tanto como el coche ganable en la ruleta de la suerte como la tienda del casino cambiarán cada semana.»

Sold in parts

The full game costs more than the price on the box: there is separate paid content. Not a dirty trick, but worth knowing before buying.

Evidence: Wikipedia (es): «Con el nuevo DLC se podrán personalizar estas partidas, con parámetros como restricción de armas, zona limitada, etc.» · Wikipedia (en): «Plans to develop single-player downloadable content (DLC) were later scrapped as the team focused resources on Grand Theft Auto Online and Red Dead Redemption 2.»