@dave101, I preface this by saying I do a ton of copywriting for my clients and never farm it out, but years ago I did enlist Joel Klettke of Business Casual Copywriting. for one project. He was excellent. Has a crew now, but still is pretty hands-on, I think.
Of course, I assume you mean copywriting specifically, and not what's commonly labeled "content." (I've got a couple of recommendations for the latter.)
New advertising option:
A review of your product or service posted by a Sterling Sky employee. This will also be shared on the Sterling Sky & LSF Twitter accounts, our Facebook group, LinkedIn, and both newsletters.