I have them on my Scrambler as well. Cheap replacement when they get trashed.Where I take my KLR bar end mirrors wouldn't last long. But for on road, I get it. I have them on my Scrambler.
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The OP's pictures of the eBay specials look identical to the "on sale" for $40USD I got at Cycle Gear. Normal price $80. I feel the $39 was a little high for the quality but have seen them for $15 on eBay.
If my Scrambler never saw the dirt, I'd go quality as well. Truth be told, the cheap ones work just fine. No vibration issues or spinning glass. I really could live with just one due to the concaved glass.