[svandamme]

not entirely true, after the Tulip Mania the bulbs did hit zerovalue because of zero demand.
If you had a tulip bulb you could not sell it as nobody would pay for it.
That , de facto means they have hit zero value.
Couldn't eat em.
Couldn't sell em.
all you could do is plant em

it's only slightly better then just throwing em in the bin, because if they came out you had a flower. But you had no money . People didn't buy flowers in those days

You could get a flower back, not money.