Coin catalogue value less than current exchange value

Hello all, 

I'm not sure if this was already tackled in some thread. 

Is there a way to limit the lowest catalogue value of coins in use (no matter the state of the coin) to their current exchange value? 

Example of current (absurd) situation:

Since a flight to Israel is over $500 and no local banks will exchange foreign coins the current exchange value for an Israeli coin is irrelevant to how I value the coin. I have purchased coins for below the current exchange value many times.

Have a nice day colleagues.

      The value of valid coins and banknotes should not fall below their exchange value. The same applies to gold coins -the value of which should not be lower than the value of gold in the given quality -content.

      I also noticed our "Czech valid coins and banknotes"

https://en.numista.com/catalogue/republique_tcheque-1.html

Here you can see our valid CZK 500 banknote: N#207549

There's $19 in F  - what is ours now 437 Kč

Just yesterday at the post office they returned my overpayment for gas and all the papers were UNC:

And how the numbers follow nicely!

 ( also returned gas deposit at UNC)                 Why am I putting this here??? 

Well, because I can easily buy a full wagonload of such papers for half the price - if someone offers me. The same thing about 200 euros, 100, etc. I wouldn't be against 100 dollar bills, even in F quality, for a third of the price 🤣😆take it with humor

,,  All valid should have a minimum value in the actual price,,

Ahoj Ivan