Welcome to AAPK. Someone here may know the answers to your questions. If not, I recommend you ask Case. You can contact them by email.
Consumer-relations@wrcase.com. You’ll need to define what you mean by “dealer knives”. For example there are knives that were mounted in some type of shadow box or frame and sold to authorized dealers for advertising display, there are ADE (authorized dealer exclusive) knives, and so on. For current value, an advanced search of eBay sold listings of the item is your best resource.
Ken