Why are there illegal option orders in the orderbook?

An option can never have a premium that is higher than the strike.
But with some tickers/symbols the orderbook clearly contains some Ask prices that are higher than the strike, for example strike is 2 and Ask is 5.
How come? Who can place such offers? B/c I cannot as my broker's system gives an error when trying to place such an order.

These illegal prices are also a problem for IV calculations: it wrongly increases the IV since IV usually is calculated from MidPrice between Bid and Ask...

I experience and observe such buggy option data even in broker-official "current" data received via broker-API.

Update: above I mean Put options.

 

No...

 

Give an example, if you can . Can also be some theoretical BSM parameters.

 

stock is at 10, then call 1 is 9. So higher than strike...

 

Oops. I forgot to say that I was meaning Put options.
Can you give also an example for Puts?

 

I don't know the MM rules (not relevant if you're not a MM) but probably they have to quote at least a certain % for a spread < 5. So therefore lots of offers at $4.90...

 

Here's a screenshot: watch the Ask of Put strike 2:

 

Here's another example, now with volume even > 0. See Put strike 2, and its exploding IV :

 

That put is in the money, and it has a huge bid 0.43/ask 5.00

You could never sell it for more than 2$ but you are welcome to buy it.

 

The question is about how and why the $5 was accepted into the orderbook.
Who is allowed to place such a sell order with a price above the Put strike?
Why does the marketplace accept & tolerate such clearly fraudulent orders?