Each of the two volumes is a compact 6×9 inch US trade paperback size. The two volumes may be purchased separately or together, although they are intended as a set. The cost for the pair is US $16.58, plus postage and applicable taxes. Please visit the description page to order.
Note that these volumes do not include the Version 11.0 code charts, nor do they include the Version 11.0 Standard Annexes and Unicode Character Database, which are all freely available on the Unicode website.
Purchase The Unicode Standard, Version 11.0 - Core Specification
Over 130,000 characters are available for adoption, to help the Unicode Consortium’s work on digitally disadvantaged languages.