When is the right time to sell?
I strongly believe that it isn’t worth selling your blog until it has at least a few thousand subscribers and it is making a decent profit every month. As I have said many times on the web, the most difficult part about developing a blog is launching it and getting the first one thousand subscribers. This can sometimes take a few months but in some cases over a year but once you hit this target things to start to move more quickly. Your subscriber base and traffic will grow exponentially as you have more readers to share your good articles.
Very few blogs make more than $1,000 profit per month with blogs less than one thousand subscribers unless they are using the blog to market their own product (e.g. membership area, course, eBook, consulting etc), therefore you should only sell if you really need to.