Update: The excellent comments on this post have made me realise that I proved exactly nothing in this experiment due to the poor way I set it up. Thanks all! Will try to do better next time.
Well, it’s a pretty stark message: either I’m doing something fundamentally wrong, or they’re a complete waste of time and money.
Here’s my results after spending $50 on three promoted tweets:
As you can see, not exactly stellar results.
So how did that translate to sales? Remember, I said that, “After Gumroad’s commission and the 10% discount, I need less than 10 additional people to buy my ebook to break even.”
According to my Gumroad statistics, I didn’t even sell one additional copy:
As the person who bought my book yesterday bought it at the undiscounted rate, I’m chalking that up as an ‘organic’ sale (i.e. they didn’t purchase it as a result of the advertising).
Happily, sales are going reasonably well anyway. They fluctuate each week, but are never zero. I think I’ll just let things continue as they are and not throw good money after bad. 😉