“Bulk buying” happens with the Clintons, Obamao, Gore etc. And then they STILL don’t rank in the top 100.
It definitely happened with Hillary’s books. A lot of them went into storage for six months, and then emerged at the $2.99 book deals later. You even had libraries buying in bulk with her book, and there a dozen copies sat on some new-book shelf area...with no one ever checking it out.