Pretty sure there's a kind of a bug abuse on the trade site

Yesterday, I saw a bug on a Discord server, allowing you to check the stats of an unidentified Nebulis
https://cdn.discordapp.com/attachments/395898972692152343/1490639432833826836/Screenshot_156.jpg?ex=69d6c3e7&is=69d57267&hm=623f76050dfd2ff0755f4ded3303e6d05ba8251b2583a5af8c2b808df4e4999e&
with that kind of research https://www.pathofexile.com/trade/search/Mirage/Ypo4dXavsY

But right now I'm farming black barya, and I've noticed some people are buying belts very strangely like this https://cdn.discordapp.com/attachments/789998957606076448/1491253399008579756/image.png?ex=69d70574&is=69d5b3f4&hm=15de6946a0cc0d0f4540bf8d07efa56817eb7f7d39af6261e4c0f9d48b4c0a64&
https://cdn.discordapp.com/attachments/789998957606076448/1491253399570874448/image.png?ex=69d70574&is=69d5b3f4&hm=1e15bd10572c0f64e0203e47e3f421a50de33ebdca888e6c17a6776d8d696db7&
https://cdn.discordapp.com/attachments/789998957606076448/1491253400019668994/image.png?ex=69d70574&is=69d5b3f4&hm=5919c6bbc1340bb9f62b39fe531592f371c9a0e2c680be9495d4c9a74465c8b4&
and figured out the people buying those may have a way to recognise good belts or double mod belts. (This isn't the first time this has happened.)

Or, more likely, people buy the hightlighted belt and the sorting of the trade site is not based on the item placement in the tab.

Regarding the Nebulis: go on trade, search for nebulis and set "identified" to "false" and you'll see that each item has the same stat. So what bug have you found?
Or do you mean those affixes like "increased cold damage"? Those are implicit mods and not hidden by "unidentified".

For context, there are 10000+ unid belts listed for exactly 7d.
https://pathofexile.com/trade/search/Mirage/aL3JDlEMCe

I thought at first it would be odd gambling addicts would not just buy out the whole tab. But could be people just buying the last few they can afford before out of divines before they ID and most likely quit the league, sorted randomly as above poster stated.

*edit* - Also with the landmine exploit still not fixed (only made worse this league), I really can't blame people for going one by one by the trade site instead of buying out a tab and accidentally spending 70d or more for a belt.