I wanted to share my experience today, as I just learned something that may help others significantly. I messaged the seller, asking if they still had the cable and if it was a mod or had been built by Moon Audio. The seller shot back 3 messages giving more information, and how the seller had used it. I wrote back "Thanks for your response, I will write again if interested to buy". The seller asked why I had messaged if I was not interested to buy? I responded "sorry my bad, I should have done my research first, sorry to bother you". The seller replies on the attack asking why I was asking about the cable without any real interest to buy, "wasting my time", then "don't bother to reply".
My attitude towards the Classifieds has in general been the same as my attitude about walking into a shop on the road. I felt I could ask a question about availability, documentation, how the cable was produced. What I learned is that sellers are (in this case anyway) probably not interested to interact on that level. Only reach out if you intend to purchase. This is fair enough I guess- I can do research by searching the threads, online reviews, and only contact Classified sellers when I have a serious intention to buy from them if what they are selling meets my pre-decided specifications.
The interesting thing I also noted is that the sellers chain included very high end gear, but looking at the seller's content, there are only 19 messages and are all concerning listings. The seller has good seller/buyer feedback so I'm sure the seller is a very fine businessperson, but not a regular contibutor in terms of the threads. At the beginning of my engagement with Head-fi, I inquired about buying a DAP (~$1000) on the Classifieds from a regular contributor, and received the input "you are new here, and have not contributed, sellers won't want to sell to you as a new person, get involved on the Forum, post for a while, then start to make some small purchases." It seems there are regular sellers who only interact on Head-fi to buy or sell on the Classifieds. Not everyone obviously or even the majority.
Of course I fell in love with the Forum and I do occasionally buy something off the classifieds- but this was a new experience I'd like others not to have to stumble into. Maybe I ought to have known this by now, but I tend to buy "new" more than used. Anyway, beware: the Classifieds are NOT a 'shop on the road'.