I think prices will be high due to terrifs and increased costs for just about everything.
I think retailers will order fewer things but people will be afraid of spending much so even though the sales have probably already started, the biggest deals will be close to or right after Christmas when retailers want to get rid of stuff.
I think any must have toys will sell out fast and be hard to get....but fewer because most people won't be able to afford some of them, especially the new tech toys. I think people will be more willing to wait for bigger deals when newer stuff comes out and retailers will not mark them down as much.