Quote from exQQQQseme:
Michael, the answer is Yes...I consider carrying cost in that when I calculate my return on investment on my covered calls I "annualize" the profit percentage....
I didn't ask you if you considered carrying cost. Carrying cost is the reason for price disparities in same strike options. Implied volatilty has nothing to do with relative prices of options at the same strike. I'll say this again. If the difference between same strike options is more or less than the carrying cost then a risk free arb exists.
Perhaps you should be asking a different question, like what really is put/call parity. As others have mentioned you don't seem to understand it at all. Maybe you should state your understanding of put/call parity. This way we can all get on the same page.