Michael Duch, a drug dealer, testified in court that he made US$70,000 a month selling heroin on the Silk Road market.

According to prosecutors, Silk Road facilitated the exchange of $1.2 billion in illegal goods, mostly drugs, and generated $80 million in commissions between 2011 and October 2013.

Duch was arrested outside of the post office in Monroe, New York, in October 2013, where he was attempting to mail packages with heroin inside. Duch, who plead guilty and is awaiting his own sentencing in jail, faces up to 40 years imprisonment. He is cooperating with authorities to get his sentence reduced.

Using a spreadsheet that he kept to record his sales, Duch estimated that in his six months of operation he fulfilled over 2,414 orders through Silk Road, or about 31,827 bags. He sold about 3.18 kilograms (just over 7 pounds) of heroin in total through the site.

Ulbricht is being prosecuted as the kingpin of Silk Road.