E-commerce bloggers can gradually choose to write curated content from other websites/blogs. That always helps because a buyer will generally not spend much time surfing. He/she will appreciate it if you provide most of what they are looking for.
Focus on good content, not on monetization. Over time, money and benefits will follow good content.
Blog for the fun of it and show character. It is immaterial how many write about a particular subject, it is how you write the matters.