Black Friday sale - promotional offers - discounts.
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Black Friday Sale

Promotional Offers

Thank you for your interest in the 2018 Black Friday Sale.

We are pleased to offer all site visitors a 20% discount on all subscriptions purchased during Black Friday weekend (between Friday 23rd - Sunday 25th November 2018). To claim your discount simply email us quoting code SOTN20. We will adjust your purchase price accordingly. For full list of our subscriptions, see member offers.

We are also happy to offer a 10% discount on the purchase of all publications, reports and other analyses (including cost models). For full list of items for sale, see our online store. To claim this discount please email us quoting code SOTN10 and we will adjust the purchase price accordingly. This offer applies during the Black Friday weekend only.

Black Friday refers to the day following Thanksgiving Day in the United States - the fourth Thursday of November. This date is often regarded as the start of the Christmas shopping season, with many retailers opening their stores very early and offering promotional sales. The term 'black' arises because this date typically represented the point in the year when retailers began to turn a profit, thus going from being 'in the red' to being 'in the black'.