So, uh, I was wondering. I'm working on a story in which gold coins are more or less a standard currency, but then I hit a brick wall. 'Cause I don't really know how much gold coins are worth. I hear gold is a fairly heavy metal, not to mention that it's generally considered valuable, but I'm unsure on the specifics of it being used as currency. Like how much "a lot" of money in gold coins be considered. Ten coins? A hundred? A thousand? How many coins could the average person carry around? Stuff like that, I guess. It's kind of important to me, because I don't want to have people in my story going about their day with preposterous quantities of really heavy stuff. Any help is appreciated in advance.