Having settled at Cambridge in 1796, Gregory first acted as sub-editor on the Cambridge Intelligencer, and then opened a bookseller's shop. In 1802 he obtained an appointment as mathematical master at Woolwich through the influence of Charles Hutton, to whose notice he had been brought by a manuscript on the "Use of the Sliding Rule"; and when Hutton resigned in 1807 Gregory succeeded him in the professorship. Failing health obliged him to retire in 1838, and he died at Woolwich on the 2nd of February 1841.
The attempt failed, and Johnson remained a bookseller's hack.
" The bookseller's property," says Gibbon of his first volume, " was twice invaded by the pirates of Dublin."
If my reasoning stopped there, you would probably start fishing around for the receipt for this book and read up on your bookseller's return policy.