The subscriber rewards were an incentive to keep a subscription going, they weren't sold individually. As such in the worst case scenario where someone subbed purely for the reward and didn't play for a second of that sub time the item would be worth $15, in all other cases the item would be devalued as the user merely got the item as a bonus for their subscription. In other words the cap on the value of those items was $15 with the average value being less. As such any CM listing of those sub rewards shouldn't really exceed the ballpark of $15-20, logically you don't get anywhere near the price of an entire computer for one basic item. So long as the sub at the time is cheaper than the Cartel Market price of the item the people who subbed got the better deal.
Of course that estimation/explanation of price totally ignores the main factor for which I personally wish these items were to be made available again: For me they were not available the first time around. I was not aware of the game at the time and so I simply never had the opportunity to get the item in the first place. From my perspective this is an item which I'd be totally willing to fulfil the requirements to unlock...but never had a chance to do so. It just sucks to be excluded from such things.
This is a point where we very much will disagree on. As far as I'm concerned so long as someone fulfils the requirements by which to unlock something they should be able to unlock it regardless of when they played. Your commitment should be the important thing, not when you made that commitment. Even in games where I do hold a bunch of exclusive items that are no longer available I don't have any problems with people asking for those same items to be obtainable through the original method (or an equivalent one). What other people have/don't have doesn't really concern me.