Hi there, I have a fitness eBook selling for $1.99 (on offer from $4.99) on Selz that I wrote myself with my own photographs, and I'm interested in buying 50,000 clicks from Neobux. Particularly, I want the 'Standard Exposure' 5,000+45,000, which means that my ad will be displayed a minimum of 30s at a time. This costs $77. If 2% of these buy my eBook, I'll make 1,000 sales, making $1,990, resulting in $1,913 profit each time I buy this package. My question: is 2% an accurate assumption?