I don't. But, I haven't changed the product since march 2012, I believe 14 months of consistent range of 27-34 sales each month can be considered stable. Especi

I don't. But, I haven't changed the product since march 2012, I believe 14 months of consistent range of 27-34 sales each month can be considered stable. Especially since the drop started the day I changed the price. I want to leave it like this until the end of month 4. And then I'll revert back to $19.99 to see if number of sales go back. Although, I'm thinking I might offer two versions of the product, one for $19.99 and other for $29.99 as someone suggested.