I Use Gold Coins to Buy God-Level Skills

The divided human empire, the boundless demonic tide, and the three pillars of gods that are hostile to each other. Faced with all this, all Stan can rely on is the sword in his hand and a deceptive book. "What do you mean it costs 10 million gold coins to purchase holy swordsmanship?!" "The gold coins I got from selling eight countries together are not enough to buy one of your skills!"