A legitimate, unused Steam key for Blur, if real, can sell for between $80 and $250 on auction sites. For a game that originally cost $20, this is pure speculation. Do not pay this.
Downloading "free license keys" or "keygens" poses significant threats: license key for blur pc game online
On August 15, 2013, Microsoft officially retired GFWL marketplace functionality. By 2014, key activation for new GFWL titles became erratic. Today, the situation is terminal: A legitimate, unused Steam key for Blur, if
Thus, the original license key system is functionally dead. No amount of typing a valid key into the GFWL dialog will unlock online play. Thus, the original license key system is functionally dead