This is not just because this amount has been spent for some mischievous triple backs. The reason for concern for you is that if the answer to both questions is positive, have you paid with bitcoin? When this dark market was still up and running?
Are you buying something illegal on Silk Road years ago? In spite of this, the Silk Road was closed in 2013. This is also because it is possible to retrieve this evidence of this evidence still. So today it can be worth a high end vehicle.
Source - https://www.ccn.com/researchers-unmask-anonymous-tor-users-tracking-bitcoin-transactions/