I keep a blog centered around a niche topic (the pricing and positioning of software applications). I created a backlog of 300+ ideas for posts, but rarely look at it.

Once I got into the habit of writing something every day, my posts became easier to write. The discipline I gained by writing a book on the same topic helped immensely.

It's extremely risky to go with low-bidders for blog content. You'll wind up with low quality articles that make your company appear sub par.

How much is a blog post worth? As with all things, it depends. That's like asking how much a car is worth. Are you buying a Ferrari or a Toyota? Do you want to create content for SEO or to interest potential customers? How much research is required for your articles? How original do you need your content to be?

A link to your site would allow us to provide more detail.