Mooncake clearances, how long after the Festival?

Since I have never managed to be in the SGV the day after the Mid-Autumn Festivities and I’ve heard about the clearance sales of leftover mooncake stocks at the supermarkets (and bakeries?), I have to ask, and use another comma, how many days afterwards do the sales go on? If I go down next Thursday, is that way too late?

At supermarkets, at least a week, if not 2.

At bakeries, couple of days.

The unsold ones are put in deep-freeze for next year.

… and some can be used as pucks for the NHL playoffs.