According to Vaughn at the time, they could use this batch of Muggle currency to buy gold from Muggles, then sell the gold to the goblins at Gringotts.
But after living in Muggle society for a while, Lupin, who had kept up his habit of reading the newspapers and studying, felt that this method was not particularly reliable.
"You're still trying to buy gold from Muggles? Vaughn, it's useless. The loans you and Dumbledore provided only amount to five hundred thousand pounds. How much gold can that buy? And what will we do once the money runs out?"
WAC already owed more than thirty thousand Galleons. Lupin did not want to owe any more. He was afraid that he would be unable to repay it in the future and would have no choice but to sell out werewolf interests.
The reason Lupin still remained in WAC was that he saw himself as a nail, preventing the organization from becoming someone's tool for private feuds one day.
Vaughn neither confirmed nor denied Lupin's growing wariness. He merely smiled. "Remus, it seems you haven't learned much of use in Muggle society."
"What do you mean?"
Vaughn did not answer. He simply patted Lupin on the shoulder and gestured for him to get up. "Come on, Moony. Come with me somewhere."
"Don't call me Moony..." Lupin complained unhappily. "I haven't used that name in a long time."
"Fine, Moony."
Lupin: "...Were you even listening to me?"
Though grumbling, he still got to his feet. As he watched Vaughn wave his wand and ignite the fireplace, he asked in an apparently casual tone, "Come to think of it, why do you know my old nickname? Very few people know it. Only..."
"Only Wormtail, Padfoot, and Prongs?"
Lupin fell silent.
For a moment, his expression