The prices you see are prices put by Numista members. It takes a median of all the prices and displays it. In the case of coins that have a relatively high nominal value, very often collectors abroad pay much less for them. Let's say someone gets 100 coins in bulk for $100. Since such coins have high mintage numbers and do not have high demand, they may end up in such lots. Then the buyer just puts the price that she/he paid for each of them, $1. Since a lot of people acquired them under face value, the system shows a price well under face value.
Or people even buy them individually under face value. An example of it can be here - $0.99 + $1.20 + (tax)
https://www.ebay.com/itm/Israel-10-New-Sheqalim-bimetal-XF-palm-tree/254748122401?hash=item3b502bdd21:g:MEcAAOSwDkJfhj1f
And if a person bought several coins from a seller, shipping will be even cheaper, and the cost of the coin will be a bit more than $1.