Yeah when it comes to the drug trade an annual turnover of 500,000 is small potatoes. This was probably just a smaller local drug dealing crew.

When you put it in perspective, trailer park guys from the Aryan Brotherhood in Oklahoma alone for example were selling 2,500 kilograms of methamphetamine annually. A single gram of meth usually costs around 40 bucks so you can do the math...

Many professional drug trafficking crews make much more than half a million every year.