In chapter 2, p30 says that from the practical point of view, it is generally quicker to compute the value of OTM options than ITM ones as the values (of OTM) options are smaller. Would you please let me know why it is quicker if we can use black-schole formula?

On the same page, the second to last paragraph says as the value of call can be arbitrarily large, it makes some mathematical convergence arguments involving calls tricky. Would you please elaborate on the "convergence" point? What kind of convergence?

Finally, on p31, I see that markets will only quote the value of OTM options, leaving the cost of ITM options to be deduced. Based on the text, it suggests traders trade and quote OTM options but not ITM options because of pricing issues. Would you please discuss more on the pricing issues of ITM vs OTM options?

Thanks a lot!