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JeffM's avatar

Thanks Steve I was puzzled by your comment.A good buy in that case.

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JeffM's avatar

I know what a keystone is but what is your context relevant to price??

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Steve Sorrell's avatar

Sorry Jeff. I should have explained. Keystone is a pricing structure used in the US. Keystone = 50% of marked price. So I paid US$20 for the specimen. Incidentally, Double Keystone is 75% off.

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