Google is getting VERY good at catching spun content so you'd better be talented at manual spins. If they DO catch you, of course they'll spank you... and hard. So anything you use spun content on is inherently AT RISK. Worse yet... Google gets better at finding spun/poor content every year. So in the longrun you're screwed. I'd weight your other options and see if you couldn't find a cheaper source for manually hand written content.

Aaron Sustar is a well-known name in the online marketing field. Back in 2007  he started his own successful online business and hasn’t looked back since.   He describes himself as an entrepreneur, programmer and in love with life, he considers himself more of a “science” guy than a “marketing” guy.  Aaron Sustar passionately works on improving Spin Rewriter, a software he developed. 

Using our online paraphrasing tool, you can rewrite unlimited content without any limitations. There isn’t any word or query limit. You can spin the article spinner as many times as you want. All the words or phrases which are replaced by our paraphrase tool are highlighted in different colors. You can click on any one of the highlighted words to get the detailed information including original word and suitable suggestions.
If you are someone who is trying to have a proper understanding of the functionality of an article rewriter or a paraphrasing tool then you are at the right place. An article rewriter tool is a simple tool that can work both online or offline, depending on how it functions. An instant article spinner or a paraphrasing tool is an efficient yet very easy to use tool that understand and identifies the text you give it, then rewriting it for you. It enables you to get your article rewritten with no trouble. Any quality article spinner saves your time and the trouble of sitting in front of your computer for hours in an effort to write unique and quality content. However, article rewriter is only a tool that does exactly what you asks it to do that means it only rewrites the content you give it, you still can go through the rewritten content make any changes that might be needed. At times, a paraphrasing tool ends up rewriting an article that doesn’t make much sense and that’s why it’s essential to proofread before you use the content.