Buyers who are part of the inner circle bid on a painting and they get the painting plus a boy or girl delivered to their home later that night. I am certain this is how they do it. Some of the customers are not part of the inner circle they don't realize what the VIP bidders are paying for these customers are just there to buy over-priced paintings. But the insiders know what they are really there for.

There has to be a secret code in the auction pamphlets that tell the insiders what they will get if they are high bidder for each painting. These insiders won't bid on every painting only the ones listed in the pamphlet that have the special code letters B for boy and G for girl and their ages. This is why Alefantis flipped out when Pegasus was mentioned.

They probably don't do it this way now that Pegasus was exposed but for decades I think this is how it was done all over the world. The elite snobs who go to modern art auctions or auctions for any valuable things were probably doing this for the last 100 years it's a perfect way to transfer money in a public setting for a legitimate work of art but what they insiders are really paying for is delivered to them late that night or a few nights later. The painting or the sculpture or whatever they bought provides a perfect cover for transferring money.