You can save it for a spare. If one you has breaks then you can just replace it instead of fixing it and using your creds on it. I have up to 10 spares on NPC items. I keep selling them once I get to many but I save some because I get them to fast. You will get many more repeats as well. That is why one of the guys here suggested using them to get tokens, to upgrade things.
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Please check out my path guide:
http://galaxylegion.com/forum/viewtopic.php?f=3&t=30938Ship size: Colossal Galaxy Destroyer,
Because just destroying your star wasn't enough.