We primarily shoot single scene DVDs. We duplicate in house. The second that a DVD goes into editing, a request is sent to our graphic designer for a box cover. Once it comes out of editing, it goes up for sale on our stores. That day or the next, we duplicate 30 copies of the DVD. We keep several here, and then we ship that dvd out to VOD Providers.
The day after it's been shipped we develop a website for the DVD.
30 days after the DVD has been released out of editing, we then encode the scene for our members areas.

After about the 40th day, we then offer it to different stores that buy from us.

We don't really do the distribution venue anymore. We tried it a couple times. It didn't work out. And they want to pay as cheap as possible.
For a full-length DVD it cost us $1,000 in duplication. $50 for graphic design on it. Then you have to go through the duplication companies and many of them have minimums. So by the time everythings done and you get paid, we always broke even. And, I am seeing DVDs decline across the map.

All I can suggest is...
Figure out what your overhead cost is on producing that single scene including model pay, electricity, camera wear and tear, everything that goes into factor for that scene production.
You want that scene to earn triple of your cost. So if it cost $1,000 to produce it, you want to make back at least $3,000.
We used to be very cautious about over exposing our content. But we then learned that piraters do it. So why not go and expose it anywhere that it will make a dollar. We work with every VOD venue except for XOD, MaleFlixxx, and Yappo.

I think that may help you.