The prices they can bring are ridiculous! Especially for what they are, Don’t get me wrong they work just fine for their intended purpose, But their is nothing fancy about them Whatsoever, They are on the Crude Rough side, They are intended to be sighted in at a Chosen yardage and then Locked down, Unlike the Field adjustability of the Lyman and Williams. The Lyman 57SML, And Williams FP Hawken are FAR AND AWAY Superior Tang Mounted Peeps to the TC’s, The TC Tang Mounted Peeps are Collectors items these days, hence why they bring the Prices they do. The old Saying, The best way to Drive the price of an item up, is to STOP Making it. That REALLY holds true in this Case!!