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I did pay the $300 for couple of my clients and I did not see any improvement on google serp , however  about 15% more traffic from Yahoo was the single improvement.

many websites got penalized for small duplicated content paragraph , fix all duplicate content and the website will be back , however if you receive any webmaster tools messages , chances that your website will ever recovery are very small. Google just did a wrong step, his search quality is much lower now , I started to use bing more times per day because google is not able to provide me the best results , they block to many websites to be able to show best results.

Check webmaster tools again today , it seams that many messages are just sanded today  from google.

I did check manually  more sentences from your content

probable are more problems like this , you can check for this more

I did notice some duplicate content

this also can be a problem

search on google for

"I bought your European language pack and I'm pleasantly surprised to see what your software can do. I'm an interpreter who speaks 4 languages fluently. While a computer will never replace a human's interpretation and translation skills, it can certainly be a great aid. Of all the different kinds of software I have seen, yours is definitely the best!"

It seams that you have the same problem , I know that many people from here will not agree with me , but your generic anchor texts are missing , the generic anchor text are anchors like this : "click here" "read more" "check this out"  "source"   , I did make a lot of investigations over penalized websites and the single difference is this problem.  I recommend you add about 30 generic backlinks, and your website will came back in about 3 weeks.

Tables are ok , they will not create you problems , are you sure that your content is not stolen ?  try to search some of you content on google using quotes "sentence here"  and if you will see some other websites listed in front of your website than you know that you have "duplicate content penalty".  If this is not the case you can write your URL here so more people will take a look.

I did pay the $300 for couple of my clients and I did not see any improvement on google serp , however  about 15% more traffic from Yahoo was the single improvement.