Depending on what version of an engineering sample, it may include / exclude certain features.
Addtionally, power consumption could differ from an actual production reference model.
It can be worth money to someone who like to collect engineering samples since they are rare, but those people may be hard to come by. You can always post on e-bay to see if anyone bites.
People like me? OH yea I just picked up a Kyro 2 card for $25 after tax
I over paid