On the character of Wilfrid Voynich

[Rafal]

We don't need to rely on that statement only.  He did that all the time, didn't he?  Even with the Jesuits.  Offer a very small price for books that he hoped to sell for many thousands of dollars.

There is a strong suspicion that Voynich was laundering money. at least at some moment of his life. He was a revolutionary who could have access to illegal money. So he could actually pay more for his books than he claimed. Or he could use illegal money to buy his books.

From Polish Wikipedia:
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In 1898, he founded an antique shop in You are not allowed to view links. Register or Login to view., published luxury catalogues and, above all, offered hundreds of priceless You are not allowed to view links. Register or Login to view. and rare manuscripts that he had previously had to buy for astronomical sums. There is therefore a suspicion that this was a way to launder revolutionary money