Originally Posted by
worldiswide
Are us dollars accepted and is exact amount required at the desk?
Yes, and as long as you're not paying in bizarro amounts, they should be able to find 2 $20s for 2 $100s, eg.
AX is warmly welcomed for reciprocity at SCL. I've used it several times now for my $90 fee - in the same Passport (Australian)

Confirmed!

One of the few bennies of a US passport is the $160 covers the life of the US passport.