10 GBP is about 17 USD... which seems quite cheap to me. I know that these were machined and then anodized. I expect there isn't much profit built in. Considering the delrin plugs used for the same purpose are over $30 USD, I think the anodized aluminum is a deal.
I think Wayne (waynemarlow) has some left. He used one on his Stealth, two on Bitza, sold one to me and another to yet another F16 sailor. Those were cnc machined from billet ally and designed to fit the 1 3/8” tube by 16 gauge all three of us used for our new poles. They are raw aluminum, there is no point in anodization for those bits, friction from the lines would eat through it in no time. You can always ask him if he would be willing to sell you one...
I like those pole end bit a lot: it moves the tack to the front as much as possible, removes the need for a bunch of hardware and prevents the tack line from wrapping around the pole (happened to me twice, capsized both times
