mike, listen, first of all, I have nothing whatsoever against you, so pls take my comments in the spirit they are given, i.e. neutral.
Firstly, xflat is right. When I say "cheap", I am not referring to the total amount of premium paid or received.
Secondly, I can also see why xflat is so frustrated. According to the posts you have made with a brief description of your strategies, here's the two possibilities I see:
A. You indiscriminately sell options close to expiry, because you believe they're mispriced.
B. You actually pick "expensive" options arnd expiry and sell them, because you believe these particular contracts are mispriced.
From your first few posts it looked like you were doing A, in which case you would have been an accident waiting to happen (which is what, I think, xflat was trying to get you to realize). However, when you got into a bit more detail, it started to look like you were actually doing B. While I don't like strategies like B (I mentioned why already) and you make an impression that you don't have a good understanding of your rich/cheap metric (perfectly willing to be proven wrong about this), B makes infinitely more sense than A. Basically, at heart you're a relative value (RV) trader, like a whole bunch of us, including myself and xflat, I'd guess.
My Z$2c...