Its a normal business practise. the thing is you prolly couldnt find a job at first place anyway, unless these companies provided you with trainings and assited with job, and file for the H1...this is a typical scenario. but in IT industry, there are LAYERS after layers, not to shock you but 10-12 bucks and hr is actually on a low side, i have seen at times, their cut being 20-25 bucks n hr too. 

do you mind me asking, what do you work as.