Pretty sure some bots or something just bought a load of level 70 crafts

Not sure this is a technical issue, but I couldn't work out where to put it.

Anyway, I just had the notificatins pop up of a load of sales. All vanya healer stuff and rose gold accessories. Sometimes people do buy a lot in one go so nothing too weird. But I look the other sales I made at the same time and I also sold a level 70 Sarnga weapon to someone, and I have a look at the Sarnga sales and all four on there went within a minute of each other to gobbledook names. I look them up and they only have archer levelled up, not even bard. And so I check the guy who bought the healer stuff, same thing, conjurer to 50 but no whm. No FC or anything. Similar sort of name, short and weird.

Are bots buying to sell on a different server or something? I don't get it.

It's possible something sold on server A is half the price on server B. Untraceable perfect way to make money moving out bots