KinkOnDemand is relatively big, given that the content is exclusive. There are over 3,967 episodes to watch and they come in several formats, with the newest ones giving you HD playback that can be downloaded in MP4 files. Most vids can also be downloaded in great-quality Windows Media files and some give secondary options for RealPlayer.
I'm guessing that at times, the quality affects how many credits are charged and the popularity of a shoot might also be a factor. How recent it was shot could also be part of the equation. Most episodes also have high-res pics.
Here's a sampling of what you get:
Fucking Machines: Crazy devices with hydraulic dildos and vibrators for the ladies.
Hogtied: Women are bound in beautiful and elaborate ways.
Men In Pain: Intensely powerful women dominate men.
Real Fucking Couples: Hardcore pairings and three-ways with a supposedly amateur appeal.
Sex And Submission: Men dominate willing women.
The Training Of O: A sweet lady learns to be a slave under the tutelage of an experienced Master.
Ultimate Surrender: Lesbian female wrestlers struggle in the ring. The winner sexually dominates the loser.
Water Bondage: Besides being tied up, females are dumped into tanks of water.
Wired Pussy: Electricity is added to pussies to make for a "shockingly" hot combination.
You will find some sites with alternative content. There's some all-male action to be found on four of the sites and there's also one transsexual site. Since all the content comes from other sites, updates are extremely frequent. In fact, you'll find a new scene every day somewhere in the network.
To join some of these sites individually can at times be an expensive proposition. I guess that makes this site a more reasonably priced option in some ways. Kink On Demand is one of the few sites on the market that lets you pick and choose what BDSM and fetish content you want to view.