Our 12 Days of Savings Sale (with 12 key books, on sale for $12 each, for 12 days only) ends at midnight on Sunday, Dec. 18! So don’t delay ordering! (At this point, we’re so swamped with orders, that the only chance to get yours by Dec. 23 is to choose Priority Mail Shipping, and hope really hard for a Christmas miracle at the US Postal Service… but we’ll still get ’em in the mail as quickly as we can.)