Why would you pay over a hundred dollars for a knife when you can get a perfectly good knife from that guy at the fleamarket for $10? And his are made of "Surgical Steel!"
If you need a screwdriver, you can buy one at K-Mart for about a buck or two. If you get a chance, sometime, ask your mechanic what he pays for screwdrivers. For the same size and style of screwdriver that you got at K-Mart, he probably pays SnapOn ten bucks. Does your mechanic enjoy over-paying for tools? No. He realizes that the K-Mart cheapie screwdriver is, first of all, the wrong size and shape. It will not work well. It will take him longer and more effort to get screws out with it. It will scrip some screws and damage some screw heads. And, on top of that, it's poorly made so that, if used constantly, it will quickly break. Because he uses it constantly and because he depends on it to make money to feed his family, he needs a good screwdriver that fits properly, works properly, makes quick easy work out of his tasks, and lasts a long time. So, he invests in quality tools even though they cost four, six, even ten times what cheapies can be had for.
Maybe ten or twelve years ago now, I happened to be working in a lab when another fellow cut himself with a pen knife. It wasn't a serious cut or anything, but he sure felt it. In his sudden reaction to it, he tipped one of those "Super Big Gulp" cups of soda pop onto the floor. Well, we was busy tending to his finger, so I went to the janitor's closet to get a mop. What I found was no ordinary mop. I found a professional mop and bucket. And, as I used it, I became very aware of how its design and simply the quality of its construction made cleaning up that mess quicker and easier. A few weeks later, I spilled something in my own kitchen. So, I went to my broom closet and got my stuipid little bucket and my cheapie mop and started to clean up. Without applying undue force, I broke the wringing mechanism on the mop which had ever worked well to begin with. The next day, I called the facilities manager at work and asked where to get one of those good buckets and mops. He put me in touch. It cost about ten times what I'd paid for my old cheapie. But, I still have that bucket and mop today. Their design makes mopping my floors quick and easy. Little things like high-quality casters on the bucket that roll easily from room to room even over carpeting. This bucket is obviously the result of studying professional janitors in many different settings and figuring out what they need to do their job quickly and easily. And, it's obviously the result of studying hundreds of broken buckets and mops to see where and why they failed. It seems like a silly thing, a mop and bucket, but it's one of the best purchases I ever made.
Maybe five or six years ago, I broke yet another cork screw. Of course it happened right as guests were arriving. I had to search for my old SAK to uncork the wine. The next day, I made quite a search and found the best quality professional cork screw money can buy. Again, it was ten times what you'd pay for a cheapie. But, I tell you what, if I ever get busy and have any, my children will fight over that thing when I'm gone. It works great and I just don't have to worry about breaking a cork screw again.
EdgePro's product (as the Pro in the name suggests) is geared toward professional users, knife makers and knife sharpeners. It it works properly, it makes quick and easy work out of the tasks at hand, and it's built to last a long time even under constant use. Expect to pay more for it.
As my sainted father used to say (and, you know what?, even though he's gone home, he's still getting smarter every day

) "the joy of low price is quickly forgotten amidst the bitterness of poor quality."