The diagnostic system that has the de-encryption loaded into it is probably a $3,000-$5,000 piece of equipment. It's cheaper to just get an unlocked PCM than try to find a machine. When we talk about encryption keys, we're not talking about a physical CAC card or some such loaded into a handheld scanner. It's a software key usually held on a diagnostic terminal that they plug into your vehicle with a dongle. You can get the dongle for cheap, but without that expensive terminal the security software is loaded into, you're SOL.