I'm pretty certain the knives you have are NOT a set. The collection contains some knives that I've never seen sold in a set and omits things that are (a steel, for example).
Also, several of the knives have different handles, suggesting different models or different years.
So looking up current set prices won't help you much.
WHAT MODEL(s) ARE THEY?
Brand new, today, those knives would likely retail for at least $1000, probably more.
But like Craig pointed out, the chef's knife is pretty trashed.
Also, my guess is that you'll be hard pressed to find anyone who wants to buy all those knives as a set. No one really needs all of those. You might be more successful selling them separately.
Less is not more. More is more and more is fabulous.