Should there be concern?

Recently I ran across an item of interest to me here on audiogon. As I read the entire ad I found it strange that the condition of item said new but the limited informative text said it was used until recently. I send the seller a private text regarding this and the limited information suggesting he should change and add more information.  I received a nasty reply and was promptly blocked by the seller. Would this raise red flags to anyone else or am I just being too sensitive?
Big red flag. I have also recently seen many ads here rated as new, and the narrative then says only used for a week or 50 hours...
  Yes I have seen this alot lately.  I didn't know you could block or get blocked by anyone on this site.
Why not report them to Audiogon?  Audiogon is great about looking into "fishy" sellers.