Harlequin 40% off sale. Feb 14th - 17th. Use coupon code
SWSL214
*Offer valid from February 14, 2014, 12:00 a.m. ET until February 17, 2014, 11:59 p.m. ET. Quantities are limited. Not to be used with other offers or coupons. Valid in U.S. and Canada. Sales tax applicable in N.Y. Canadian residents will be charged GST. Orders subject to approval. Limit: 30 books per order. Click the Apply Discount button on the View Cart page to redeem the offer. One-time use only.
Emphasis in red is mine. Doesn't say it is invalid for ebooks like so many of their offers do. But doesn't specifically say it is either

Guess I will try tomorrow just to see.