Why did Diavolo sell the arrows?

I'm curious to understand the motivation behind Diavolo's decision to sell the arrows. Could it be that he needed a quick influx of cash for a specific purpose? Was there a pressing financial obligation that he had to fulfill? Or perhaps he saw an opportunity to capitalize on the arrows' unique qualities and value in the market? It's intriguing to speculate on the reasons behind his choice, as the arrows likely held a significant sentimental or practical value to him. Did he weigh the pros and cons carefully before making the sale, or was it a spur-of-the-moment decision? Ultimately, the answer to this question may remain a mystery, but it's certainly an interesting topic to ponder.