Not sure about the latest price, but yes, you are most likely to source them only through Rolex or a main agent.
Beware : they came both without and (later) with cut-outs for the different types of spring-bars, to correspond with the change from watch heads with pierced lugs to those with solid lugs. Fit the wrong type of end-link at your peril, as it's the devil's own job to remove a bracelet with no cut-outs from a watch with solid lugs.
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