I've seen all sorts of sales pages claiming to make you rich rather quickly, and with little effort: from the Rich Jerk, to "We've earned $5 million in 4 years, and so can you" type of ebooks, they all seem to be TOO hyped. I feel like there should be a reasonable amount of money that should be reasonably attainable. The remaining results aren't typical. My train of thought on this is as follows: So that begs the question... when you're selling a digital product, how much money is TOO MUCH money to claim to have earned online? This is sort of like a "tipping point" after which the author loses his credentials in my mind, because what he's doing doesn't make logical sense to me - whether conscious, or unconscious. What do you guys think?
It is really difficult to pinpoint a dollar amount to sufficiently answer your question. Like everything in IM, it depends on what method you are promoting, how much your e-book is selling for, etc. Personally, I would have a lot more faith in a product that promised $50/day after some initial work and sold for $27 than a product that promised $500/day overnight and sold for $7. However, there is a sucker born every minute, and a lot of them seem to be drawn to Internet marketing, so there will always be TONS of people who truly believe that someone would actually give up the details of a $500/day method that actually works for $7.
Don't claim more than you've actually sold. People read into (and catch) sales letters that lie about their earnings claims. Honesty build trust, trust leads to someone being willing to trust you with their CC number or $47. Just put the most attractive numbers up front and have proof to back it up. If you made $200 in a day, but have only made $500 total. You could use that. If you have a client with stellar results, use theirs. Be honest, be clear, and you'll be successful.
I don't really buy ebooks, but even if I did I doubt I'd put much weight on what "could be" earned. I'd put far more weight on the testimonials and reviews. That is why SEOBook was so successful back in the day. I don't even remember if it made any crazy promises. I think they let the reviews and testimonials speak for themselves.