Complex sentence: Upon publication, "Waverley" had an astonishing success, the first edition, consisted of one thousand copies sold out within two days of publication, and by November the fourth edition was at the presses.
Split into simpler sentences: Upon publication, "Waverley" had an astonishing success. The first edition, consisting of one thousand copies, sold out within two days of publication, and by November the fourth edition was at the presses.