The theory goes that Wayfair has items named after missing kids that are ungodly expensive, and are really just black market fronts designed to traffick in people.

Personally, I don't think it holds much water, because most of the evidence is loaded with confirmation bias.

There's valid reasons for normal items to be super expensive on websites like this. It happens all the time. Several pedes from here have even acknowledged that they do sales through sites like Wayfair and they will often overprice items they don't want to sell for one reason or another, but they also don't want to mark their item as "out of stock" due to various search engine optimization reasons.

Another large piece of evidence they use is if you plug the UPC code of a Wayfair item into Russian search engine Yandex prepended with the letters SRC, it pulls up all kinds of creepy pics of kids. The problem with this evidence is that you can put literally anything into a Yandex search engine with SRC in front of it and get the same creepy pictures.

The one weird piece of evidence I haven't seen a good counter for is the fact some of these items share names with missing children. I've heard sometimes they use AI to name these things, and perhaps it's scrubbing name lists to get those names. But the names are usually pretty strange to begin with, so it seems like it's not just a coincidence.