Let me make some ballpark guesses here: Adsense for blogs normally comes to around $0.10 - $1.10 CPM, so I assume your making it the region of $3 - $30. If you

Let me make some ballpark guesses here: Adsense for blogs normally comes to around $0.10 - $1.10 CPM, so I assume your making it the region of $3 - $30. If your affiliate ads are generating > $10 / CPM then you're home dry, your product will sell yourself. Less than $10 then you'll probably find it hard to compete against the major blog ad networks, however small-to-midtier blogs that use adsense may well be a good target market for you.