Hi all, I just received a borrowed Canon 70-200 F/2.8L IS yesterday and realized that the owner forgot to add the tripod collar. Seeing as the collar is residing in the USA and I´m in Holland its quite a trip for the poor little collar to make by mail. I figured I´d just buy one here, but those things retail at $150! Crazy for what it is. On ebay there's plenty of knock-offs going for as little at $9. The question is whether I want to rely on a $9 component to support a $2000 lens Does anybody have any experience with a knock-off collar?