As an experienced forex trader, I've always prioritized transparency when choosing a broker, especially regarding total trading costs on instruments like indices. When assessing GPB FS, I found it troubling that there is no publicly available or detailed breakdown of their trading costs for indices such as the US100. According to my review, their official online sources and regulatory filings do not provide essential figures such as spreads, commissions, or overnight financing rates. This lack of disclosure is a significant red flag for me. While GPB FS is regulated by CySEC in Cyprus and has been active for over 15 years, even longstanding regulatory status does not substitute for clear and accessible information about trading fees. The absence of these details makes it virtually impossible for me to calculate the total costs I would incur when trading major indices, and such uncertainty increases the risk of encountering unexpected or unfavorable charges. From experience, hidden or vaguely described costs can erode trading profitability, particularly on leveraged instruments like the US100. Since transparent cost structures are vital to maintaining trust and managing risk, I personally would not proceed with trading indices at GPB FS until they provide comprehensive cost information directly and unambiguously. Traders should be extremely cautious about engaging with any broker under these opaque conditions, as unexpected fees can pose a significant risk to your capital.