[Question] Gracie Discount Sale

[Alcor]

I know Gracie does a sale on her items before switching to the next set.
However, not every item is available for discount.

Such as last set was Gorgeous set on sale and the Card set on sale.

I was wondering what items from March-May set is going to be on sale.
Is the Princess Set going to be on sale later on?

I remember seeing it on some fansite, though I can't seem to find it now...