> Nowadays, you can make the bestseller list with about 5,000 sales.
That sounds pretty cheap. For a book that costs $10-20 that would be $50-100K to buy your way in. I'm not sure what the margins for books are these days (particularly the split between publisher and retailer) but that doesn't seem that expensive.
https://en.wikipedia.org/wiki/Mission_Earth_(novel)#Sales_co...
Re-selling the books will save you some money.
I think Nate Silver ought to do some work on this area; it would be interesting to read his analysis.
I'm mangling what was a good explanation, but the answer to the question of the headline is, "yeah, probably, just like a lot of others".
(Small pedantic note: your opening sentence should read "I'm NOT sure why...")