Here is the link to the two different Express Pass options for visitors to the Universal parks:
https://www.universalorlando.com/Theme-Park-Tickets/Universal-Express/Express-Passes.aspx
SeaWorld offers something similar, called "Quick Queue":
http://seaworldparks.com/en/seaworld-orlando/Attractions/Rides/Quick-Queue-Unlimited
Both available for purchase by ANY day guest.
I have used both systems (as well as the original Fastpass at Disney) and both are far superior to the Disney FP. You would not believe how nice it is not to have to return to a certain ride at a certain time. You can ride it (gasp!) whenever you want, with front of the line access. After you ride it once, assuming you have the unlimited EP or the QQ, you can ride it again. No additional FP needed. Still front of the line access. Beautiful.
Does it cost? If you are on onsite guest at either family of parks, no....its an included benefit. As an offsite guest, then yes, it does. You can choose to buy it, or you can choose to stand in line. At least you have a choice. You have options. I think that's what most Disney offsiters are asking for.....a choice.
Personally, I think that Disney is looking for some way to strong-arm people to pay ridiculously inflated prices for motel-style accommodations, and this is what they have found will work. Otherwise, the reasons for staying onsite are becoming woefully fragile......access to an overpriced dining plan with mediocre food quality, and problematic "free" bus transportation (slow, crowded, and prone to a variety of issues.....just read the transportation board).