I didn't have very good luck with my transactions with arakissun, but I confess it was mostly my fault with gambling that he had good quality parts. I tried to get pics/vids from him first, but they were always too dark to see anything. In the end, I pissed away $250 and only got same lane guides that were of any use.
Lesson learned: If you can't get detailed pics, don't go for it.