loose standards, they will accept pretty much anything you give them, they
give you the highest royalty % and you can set your price at whatever
you want. I sell all my HD clips at $55.
Clipcanvas pays high royalty rates, you can control the price of your clips. They have a very edgy look, and I generate a good amount of revenue from ClipCanvas on a regular basis. They were my 3rd highest grossing stock footage site on average in 2011 out of the 9 outlets I contribute to. I highly recommend them. They won't really compete with some of your other sites because they are based out of Europe. They even pay in Euros! <-- Paypal will convert these for you if you wish, it's pretty simple.
Revostock has mid-level quality standards, they reject my clips once in a while.
They pay a pretty good % and just recently they allowed you to change
your pricing, they used to be priced a little low. Now I sell clips at
$55
Shutterstock doesn't pay as high of a royalty % but the do have consistent sales.
I worry about their pricing, their clips are pretty inexpensive and
don't like the idea of driving down prices. They're fairly strict on
their quality standards.
ClipCanvas.com