Well, I heard that Queen got in contact with Sugo, but that only had them increase it by like $5, as I guess they were borderline.
And Popcultcha has nearly always had 10% discounts on preorders. But I've never seen them lift it so quickly, especially recently; so I'm guessing Queen got in contact with them too. Wouldn't be surprised if Sugo complained, given that they were advised to lift their prices a week prior to Popcultcha even listing it for preorder.
For Popcultcha's preorder discounts, years ago, they lasted at least a full 3 weeks, but recently its lasted until they arrive in stock. On many occasions this has made items such as Sideshow premium formats even cheaper than Sideshows retail pricing, and that's even before you factor shipping costs from Sideshow, which are free from Popcultcha for domestic shipping.