Yes, I go there in late Summer for fresh blueberries.
When the berries go pass the peak they would freeze the carton boxes.
It is cheap but you will have to sort them out before proper storage, some
rotten one would ruin the whole lot
The one at Supermarket are IQF and pre-clean.
The inexpensive one at the farm are not washed, trigs and leaves included.
I like the tiny wild blueberries.
It does not make much sense to wash frozen berries,
it depends on your luck, sometime they freeze the berries right away,
but the fresh one they can sell them for higher price so they tend to
keep them longer at room temperature.
However, pick them over before use, there are some blemished ones.
The bulk one at Superstore is no good, try the IQF one or wild blueberries.
The fresh one? $4.99 for 6 oz basket