But it is better to have the data of BEFORE market close, b/c then the Day orders are still in the book, meaning Bid/Ask is then present and real, whereas at >= EOD the Day orders obviously disappear, what remains are just the GTC orders, but the Bid/Ask of GTC orders are mostly not representative of the current market situation (b/c GTC orders are usually old)... FYI: the top-of-the-orderbook Bid/Ask are important for trade decisions, as well are the basis for IV calculations, and with it for calculation of all the greeks [if you do these calcs yourself]. I prefer to finish collecting my daily data 1 hour before market close. Then I run my scanner over the data and have about 55 minutes till market close for submitting & trying to get a fill for my orders... Of course the disadvantage of my method is that one does not have the official EOD data, but then: who cares, who needs them really? Not me. And: I think one even can re-create the EOD data posthumously on the next day from the "change" values... but now having a lag of 1 day... As said, I don't need it. I think ORATS' options EOD is similar: it's the whole-market snapshot of 14 minutes before market close, IIRC.
$399/yr? Isn't it rather 12 * $99/mo = $1,188/yr for Non-Professionals, and 12 * $199 = $2,388/yr for Professionals? Which product of ORATS do you mean?
This is a special price for ET. One-time $399 for near EOD back to 2007. https://info.orats.com/elitetrader Historical near end-of-day quotes back to 2007 via FTP are available for a special price of $399 per year for updating files daily plus only $399 one time fee for initial bulk download.