Simple fact checking is in order here.
Let’s see those book sales receipts.
I wasn’t even aware Sen. Sanders had written a book, much less a best-seller.
Seems like the MSM would have been loudly pimping it, or did I blink & miss it?
In fact, a book that doesn’t meet its sales quota would require return of all or a portion of its advance.
You’re 100% right. The “book” was just a cover for bribe payments, houses etc.