In a 9/6 Jacks or Better game you would multiply .5% by $1.25 (this is a five coin, max bet game) by 400 (hands per hour). This would bring you to $2.50 an hour on a long term game. If you are playing a short term game, you are more likely to lose $6.50 an hour, because the house end for the casino will be higher (you'll have less chance of hitting the royal).
Despite massive strides in computer technology and in particular video graphics, contemporary video poker machines are little different from their primitive forebears. Video poker fans are keen that their game is kept as ‘traditional’ as possible, and video poker has not developed in the same way that online slots games have evolved to be feature-rich monsters.
Those machines are hard to find.  Casinos don't like to put games on the floor that potentially lose money.  Your best bet for finding these games is in downtown Vegas (not on the Strip) and at locals casinos, which have to be more competitive than Strip casinos in order to lure customers there away from the Strip.  Here again, VPFree2 can help you find good-paying machines.
Si Redd’s Coin Machines, also known as SIRCOMA, released its version of Draw Poker in 1979. The significance of that statement may be increased with the news that SIRCOMA eventually went on to become International Game Technology (IGT). It was a huge hit. One of the reasons credited to the popularity of video poker and slots was how easy it was to learn how to play them. This was long before the huge presence of online video poker and other casino games we have today. Many customers were intimidated by brick-and-mortar casinos. These machines offered a new way to play, without any pressure.

For those who are willing to learn these games, it is well worth taking the time to understand video poker strategy. Many of these machines offer the best return to players (RTP) of virtually all of the casino games that are available online. In fact, when played in real world casinos, video poker games are the only ones where players who play perfect strategy can have a positive expectation. This does not include players who card count in blackjack.
Despite the importance of finding the best machines, most players don't.  That's why casinos can offer both decent and lousy machines in the same casino and be confident that gamers will still play the lousy ones.  They have to keep some good machines, otherwise they'd lose all the players who know what they're doing.  But most of the machines will be bad, and most gamers will play them anyway.  Heck, in Vegas even casinos and supermarkets have video poker, with absolutely terrible paytables, but people will still play them rather than going across the street to a casino where they can get seven times better odds.  Go figure.
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