Lots of good thoughts above about many aspects of owning a CRK, or any other "high-end" knife for that matter. In the end, your satisfaction in owning such a tool is the bottom line--not the cost. I have knives that cost a third or less of my CRKs that I "like" just as well. I have a number that cost the same up to almost triple some of my CRKs that I "like" as much or more, but not "3 times as much".
Indeed, most any knife that's well made with good ergos, decent steel, and sharp will cut as well as any other regardless of price. What it comes down to is whether any particular tool seems right for you, brings you pleasure, and performs the tasks you need in whatever fashion you require. That said, a few thoughts...
--Like others, I would suggest purchasing your CRK on the Exchange here, looking for a price point just north of $300. You can get a pretty clean Plain Jane 21 or 25 right around there. If you intend for the knife to be a user, there are functionally excellent knives with inlays or other "upgraded" features to be had at that price point. If you consider re-selling, spend a little more for a cleaner knife.
--I bought a small for my first CRK (for price) and immediately bought a large. I kept the small for about a year, but it was just not a good fit for my thick, arthritic old carpenter's hands, and I sold it off. I do favor larger knives in the 3 1/2" & up range. I have 3 21s (bocote inlay, KA CF, and Micarta inlay Insingo), a Plain Jane 25, a WC StarTac ('Zaan), and my newest, a large Inkosi natural Micarta. My small CRK is a snakewood Mnandi for "gentleman's carry" in its pocket slip. To me, the small Sebenzas are light EDCs and the larges are more practical workers.
--As to the "over-priced" aspect, I feel that for what goes into the manufacture of CRKs, they are very good values. The design, precision, fit & finish, and great customer service and warranty represent great value. Whether or not that's worth it to you is another matter. The feel of the knife and your appreciation of the design aesthetic are entirely matters of personal preference. You can get functionally excellent knives for a third of the cost and spend three times as much for no great increase in performance. I have knives in both those other categories and carry and use them often, but it seems that at least half the time there's a CRK in my pocket.
--You can take the drive and handle a CRK in the store, but there's nothing that will make up your mind for you like owning and using one. Buy one on the secondary market, try it for a while, and sell it at little or no loss if you decide it's not for you. Good luck!