The exclusionary rule is a legal principle in the United States, under constitutional law, which holds that evidence collected or analyzed in violation of the defendant's constitutional rights is sometimes inadmissible for a criminal prosecution in a court of law.
Freelance interpreters charge anywhere between $15- $60 per hour, depending on skill and demand for interpreters. Staff interpreters at schools make anywhere from minimum wage to $35,000 per year.
You can check out 1000s of freelance engineers on the new Global marketplace for engineers kkooee. You can look through the profiles and get an idea of typical hourly rate. Obviously what country they are from will have an impact on cost but most range from $50 - $250 USD per hour.