Shouldn't the currency, Gil, be its own plural? Whenever I've seen it before in other media (mostly Final Fantasy), it never had a letter "s" tacked onto the end. You'd write 10,000 Gil just the same as how you'd put 1 Gil.
It's like the real world currency Yen in that regard. You wouldn't write 10,000 Yens, but instead 10,000 Yen.
Well, I guess I'll have to look at the RAW and see if it says ギルズ rather than ギル.
Now that I've
looked up the RAW, it is indeed ギル, so I stand by my assessment that it should be its own plural, and written as Gil without the "s" at the end for multiple Gil.