Seedbox Strategies

I have a question... There are so many private trackers who are providing and uploading thousands of TB movies, songs and other video contents through Seedbox but my question is as Seedbox is not a cheap thing how they manage the costs?! Even a small private site needs more likely $1K for a month as the charge to keep the Seedbox live so how they manage the huge cost?!!! What is the hidden truth behind this? I do not think that only donation and advertises can bear the costs!


Sincerely
Raihan

I'm interested in this as well.