How much is 3 grands?

Excuse me, could you please clarify what you mean by "3 grands"? Is it a slang term for a specific amount of money, or perhaps a reference to something else entirely? In formal financial terms, "grand" is often used as a shorthand for "thousand," so if you're asking how much "3 grands" is, I would interpret that as asking for the value of 3,000 units of a given currency. However, without more context, it's difficult to give a definitive answer. Could you please elaborate on your question?