They are not really that common.
One of the members here was looking for one a few months back and had to settle on something close.
Are they worth more?... that depends on who wants it and how bad. They certainly are more rare than ones without the premier sight.
There are pros and cons to them. If you have one, and you have a part missing on the sight, it is almost impossible to find replacement parts. If it does not have a premier sight, then this is never even an issue.
In the past few years, I have only seen one guy that is on a particular search for one. So even if supply is small, apparently demad is also.
The only way you will see what it is really worth is to put it up on e8bay and see what the bidders think. All bows are worth what someone will pay for it, no more, no less.