Hyakugo Securities has a complex fee structure, which includes commissions based on the transaction amount for various securities. For example, trading domestic stocks incurs a fee that starts at 1.16% of the transaction amount, with lower rates for larger transactions. Additionally, there are fees for trading foreign stocks, ETFs, and bonds, as well as commission fees for convertible bonds. From my experience, the fee structure is standard for firms that handle a broad range of asset classes, but the complexity could be challenging for new investors.