So if you have 200,000 and a wire transfer lying around feel free to buy some XD
http://gigaom.com/2014/06/12/us-will-auction-bitcoins-seized-from-silk-road-bidders-must-deposit-200000/
200,000 is only the deposit that allows you to participate in the auction.
After that you'll need to wire the rest of your winning bid within 23 hours of the end of the auction or you forfeit your entire deposit.
Na they said it was a refundable deposit
Then again it is the FBI so you would need to assume that they would honor that although If you win the bid it might be different.
Did you even read the U.S. Marshals Service announcement?
http://www.usmarshals.gov/assets/2014/bitcoins/
Receipt of Funds. The winning bidder should be prepared to wire purchase funds to the USMS by 5:00 PM EDT on Tuesday, July 01, 2014. If the winning bidder does not provide the USMS with a copy of the wire transmittal receipt by this date, the bidder will be disqualified and another winning bidder will be selected. FAILURE TO INITIATE A WIRE TRANSFER AND PROVIDE THE USMS WITH A COPY OF THE WIRE TRANSMITTAL RECEIPT BY TUESDAY, JULY 01, 2014, AT 5:00 PM EDT WILL RESULT IN FORFEITURE OF THE BIDDER’S DEPOSIT.