If you are still looking, I have a Revelate Designs Viscacha seat bag that I bought last August. It is new, and was only put on my full-suspension bike long enough to realize that it was too large to work for me. It has been sitting in my office ever since. I did take the tags off of it, but aside from that, it is new. I would be willing to sell it for $100, plus shipping (I think a priority mailing box for this size item is about $17). If you are interested just let me, and I can email you additional photos, or other info.
Don