I'd say it usually comes down to the Dungeon Master's generosity.
But, if I had to compile one, it would be something traditionally expected and tolerated within the Confederation, as a package deal.
The primary hazards, besides engineering failures, would be wilderness encounters and hijackings.
Then you have to adjust for likely crew size.
I don't recall ship's locker actually having a value, more like currently computers, rather virtual, and for two percent bridge volume, or twenty tonnes, subsumed within that.
The most useful weapon to have would be the advanced combat rifle, but I doubt that would be part of the basic package.