Calculating Traffic Needs for Sales?

Ok, so I am promoting an affiliate product that is a free trial / rebill with a $100 payout. Now I am running an authority blog or rather building one that reviews the product along with other products and general articles.

I am trying to figure out how much I would need to make sales wise to hit $5,000 a month. So basic math would dictate I would need 2 qualified sales per day.

So what would be a fair estimate of a conversion rate? They go to my presale (review), then click to go to the product site (affiliate link), then do a free CC trial offer.

Would a 1% conversion ratio be a fair guestimate since they have to go through two pages? Has anyone done a similar site and know what kind of conversion rates they have? With my math, I would need a solid 6,000 unique a month (ack).

The affiliate manager said some people are doing 10+ sales per day with SEO only, although I see no evidence of such sites on Google for related keywords etc.

You'll just have to test it out and see what are the conversion rates for that specific product. There are many factors on if others would like to get that product.

i have done tests on clickbank with 100+ visits daily (no presell, video sales page which was very nice and product worked because i had read it). I was still making 5-6 sales per week. Traffic was through long tail but still converted. I guess you will have to check yourself with this product. Do remember that the chances of any authority site getting hit by an algo is similar to a niche site.

If i don't have Conversion data i always assume 0.75% CR.

It all depends on how much quality traffic you are bringing in. We cannot really say and you need to test this for yourself.