It's interesting that they didn't communicate the amount and I haven't found any sources that provide one. You would think there would be more transparency seeing that the money is going into the government's pocket.

Someone should submit a freedom of information request...

The FAQ (http://www.usmarshals.gov/assets/2014/bitcoins/faqs.pdf) specifically says they will not disclose. I guess if someone really wants the information, they will challenge this intention. I find it interesting that it was leaked that 1 party won the bid--that seems in contradiction to the above...