Honestly, $13 USD a day in China isn't a bad wage. I knew a 19 year old girl working as a greeter at a hotel who made 元800 CNY (Chinese Yuan) a month. Yeah, apparently you can be paid monthly. Anyway, $13 USD = roughly 元100 CNY, and for 10 days thats 元1000.
That's more than some prosties make, and this girl might not even partake in the oldest profession.