Uh, why do you want to know? Besides, it's different with every product out there. Clothes, electronics, books...
Ummm about 300 000 uniques I guess, depends on several factors like Perry has stated .... and also on ad' network, affiliate sales, ad' placement and quality of traffic.
I think that most people saying they are making "one grand from their website" are actually doing more selling paid reviews and doing outside work (photo editing, web design, web hosting) than anything else. If you look at a lot of the big website's revenue breakdowns... you'll be surprised how little (percentage wise) comes from ad networks in most cases
thenetfool, why do you think so ? I woudn't say so. In decent number of cases you need to work infinite hours of design work to make what you make with CPA offers or good affiliates. Even with adsense sometimes