You need to check the expiration date on the jar.
It's best to make it from scratch with matzo meal.
Probably because the product is sold by weight, not by the sheet.
An unopened box goes for 10$ plus shipping online.
maybe.
It could be a parachute. An unopened parachute would kill a person on impact.
This model was made in 2000 only and in unopened condition it is worth $65 + 10%for the box
a car
From Me, I have one unopened in the box.
Food, water, or a gun
I would imagine it is.
2000 years
450 $