I didn't realize there were any sites that offered real time options quotes. Thought you had to go through your broker or pay for the service.
Can someone explain the following differences in Bid/Ask for Call Strike=1 (0.60/0.65 vs 0.55/0.60) ? :
Here's a suggestion for improvement: it shows only the Last price of the underlying. It better should show also the Bid and Ask of the underlying too, b/c Bid and Ask are needed when filling out an order, for example a CoveredCall order, where the underlying is involved too in the trade. The calculations for NetDebit or NetCredit require also the Bid/Ask of the underlying.

The question was about the differences in the data, both as of "now", ie. at market close.I do not quite understand why anyone would look at the options for a stock trading under $1, but here are the closing markets from today on Lightspeed Trader.
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actually noticed that it does not show greeks for SPX, NDX, where i need it. Does anyone know why greeks are little off in IB option trader? compared to other platforms which are consistent. l am not subscribed to real time data however was informed the option chains are real time