I have a box of them myself and I'm selling them for what I've seen them sell for in the past. If Mr. Boyle does have boxes of vintage Dior 10s, he has a small treasure, because these nets are extremely hard to find. If you can buy them cheap, go for it. They're only worth what someone is willing to pay for them, and I've sold 4 x 5 Dior 10 filters for $350 on several occasions.