I am a Google Penguin penalties specialist, it's my first bid here on freelancer as i usually hire people not the opposite.
I just want to let you know that i can get back that website back by getting those penalties revoked.
I recently personally got my website back from a Google penalty related to unnatural backlinks (Penguin penalty). I just got the penalty revoked and can send you proofs. However, the challenge is not getting the penalty revoked, it's getting it with less collateral damages as possible. If you deleted or disavow the wrong links your website will lose a significant SERP and you will end regretting that decision. The people who bids here are just some non-up-to-date SEO guys who use those spammy seo methods and will not be of any help for you, they will just use some online bots tools like detox and such ridicule tools, you should know that there is no tool that can replace a human in checking the quality of backlinks as Penguin penalties are related to unnatural links, it's what i figured out in my 5 months process for getting my website back. I can help you with my experience checking those links one by one and tell you which one you should delete and which one you have to keep, i'll be with you during the whole process. Google want a perfect work otherwise they will not accept your repeated reconsideration requests and you will end losing your money and time for nothing.
Price depends on how many backlinks you have.I am the only one that can help you