Sadly, no. I didn't even know services like this existed! Neat.
I couldn't help with plagiarism or content, but I am pretty good at technical proof-reading for grammar, punctuation. If you can't find something and need a fresh pair of eyes, I could probably spare the time to read a ~10-15 page paper (I waste enough time reading this silly place, after all). Just send me a PM and I can get you my email address.