Investing is a charisma based skill that reduces the cost to invest in shops. Investment increases a shops rank, which increases the amount of gold the merchant carries as well as increasing the amount and quality of goods sold. In Elona+ there is also the option to spend more money at once to increase the shop's rank by exactly 50; this not only saves time, but is also cheaper in terms of gold per rank than investing the smaller amount of money over and over again. According to the Japanese Elona: