I need someone to write 1 blog post a week of interest to small business owners

Looking to add a professionally written blog post each week on a topic of interest to small business owners.
We are a small firm of accountants - robinsonandco.co.uk

They will either be a combination of either general topics or on Xero (xero.com) which is our specialist area.
We will provide the title which you are free to change (improve) and a basic outline of the post.

I would like two examples which i will pay for before committing to a longer arrangement.

Each post should be between 450 and 500 words

Please quote on the basis of 2 posts.