6 pic sets and 1 vid update could be spread out with a daily update and a once a week vid update.. Should be good for retention. Starting out a bit small it wouldn't hurt to show them your updates schedule with a thumbnail if possible. Keeps them wanting to see something that's coming up.
19.99 is good, but 9.99? Subtract your processing fees and that's way too cheap and especially with exclusive content that will have your site growing daily.
just my
- L