I think you need an additional subscription from IB to get the Greeks regardless, greek result will be based on some assumptions that the market is making, and that means it could be mispriced when you look at options, the bid/ask volume is so unstable, that you know participants have no clue of what they are doing and simply testing the "market", so the greeks from the "market" are not going to tell you much, worse, it will take you into the death spin of market mispricing and bad decision making (over-reaction) and the BSM is a big joke, see Taleb interesting article about it, it's all about Put-Call Parity, not the academically flawed BS Model.
Well I wouldn't say it's a joke necessarily. It's an estimate based on certain assumptions so it's taken with a grain of salt. For American stock options you wouldn't use Black Scholes anyway; Bjerksund Stensland gives a more correct estimate.
it's based on too many assumptions that have no connection with reality, so use BSM to price your options and you will be sorry for it a better approach is the arbitrage approach promoted by Taleb, that is the Put-Call parity
Yep you need to pay a month to get market data depth for options in Interactive Brokers. Well it is 3 times cheaper than getting it from ivolatility.com I will take a look on Taleb Put-Call Parity Thanks EG