How much is 10 gc in USD?

Could you please clarify the meaning of "10 gc" in the context of your question? Assuming that "gc" stands for a specific cryptocurrency or digital asset, the value of 10 units of that asset in US dollars would depend on the current market price of that asset. To obtain an accurate answer, you would need to look up the real-time or recent exchange rate for that asset against the US dollar on a reputable cryptocurrency exchange or price tracking website. Keep in mind that cryptocurrency prices can fluctuate significantly, so the value of 10 gc in USD may change over time.