My model is:

Make use of JV partners - they're worth their weight in gold.

If you dont have JV partners, then your launch will be nowhere near as successful.

Now, the trick to attracting good JV partners is:

1. Decent conversion (good sales letter)
2. Decent commission % (min. 60%, but go much higher if you can)
3. Decent amount (JV's are not going to want 60% of only $37) - make it higher priced ($47 to $77 range)
4. Decent product (JV's need to think about looking after their subscribers)
5. Decent reputation (The hardest one) - Most JV's stick with fellow marketers that they already know because they can trust them and have got decent results before, and they know they'll return the favor. When you're new, its that much harder to attract good JV's unless you can get a personal recommendation from a friend of JV. Personal introductions can go a long way in this game.

Stick to this model, and you won't go far wrong. It's the path which I followed so I know it works