Although the books did not have a consistent "house style" of art, the cover designs of early Vertigo series featured a uniform trade dress with a vertical bar along the left side, which included the imprint logo, pricing, date, and issue numbers. The design layout continued with very little variation until issues cover-dated July 2002 (including "Fables" #1) which introduced an across-the-top layout ahead of 2003's "Vertigo X" 10th anniversary celebration. The "distinctive design" was intended to be used on "all Vertigo books except the hardcovers, trade paperbacks, and graphic novels." Berger noted that DC was "very" committed to the line, having put a "lot of muscle behind" promoting it, including a promotional launch kit made available to "who order[ed at least 25 copies of the February issue of "Sandman" [#47]," a "platinum edition" variant cover for "Death: The High Cost of Living" #1 and a 75-cent "Vertigo Preview" comic featuring a specially written seven-page "Sandman" story by Gaiman and Kent Williams. In addition, a 16-page "Vertigo Sampler" was also produced and bundled with copies of Capital City Distribution's "Advance Comics" solicitation index.