To be honest it really depends on the country, company or person involved and level of expertise the translator has. Here in Ecuador, in Guayaquil there is a major lack of 100 percent fliuent American born speakers of the English language, so companies pay up to 300 usd for a few hours of work depending on the situation. Other times, I wouldn't be suprised to see someone make around 7 usd per hour doing it here, if a big international company is not involved. If I had to guess an average, I'd say roughly 15 usd on average for countries like Ecuador and Peru.