Measuring the size and growth of the darknet is tricky because it isn't indexed like the regular web. Nonetheless, various tracking organizations have noted that there are often hundreds of active sellers across major darknet marketplaces. These sites go through cycles of being shut down and then replaced, causing fluctuations in the number of active listings.

When it comes to finances, many studies and legal cases show a strong connection between darknet markets and cryptocurrency transactions—especially Bitcoin, although users have started to use other cryptocurrencies as well. Data leaks from these marketplaces suggest that hundreds of millions of dollars have flowed through them, although these numbers don’t capture everything.

Fraud and cybercrime, including stolen credentials and malware, are significant problems on the darknet. Drugs are commonly traded too, but their listings are more variable.

https://torstats.org/all-darknet-markets/torzon-market/