I purchased a Hennessy Hammock Ultralight Backpacker Asym to use for an endurance mountain bike race that I just returned from. There is nothing wrong with the hammock at all, I've just decided to go a different route with regard to a sleeping system for my next event. I bought the hammock just before leaving and I was gone for 6 nights. The hammock was $190 so I think $150 is fair. This includes everything that the hammock came with (rain fly, tree webbing, stuff sack).
I also have a pair of Snake Skins for this hammock. I tried them out in the backyard but they just didn't allow the hammock to pack quite as small as it would in it's stuff sack and I had custom bags made so it was a concern. I believe these sell for $20 so I think $15 is fair.
Lastly, I have a Jacks are Better under quilt. It is the Shenandoah model. Size is regular. This makes a huge difference in sleeping comfort. There is nothing wrong with this either but I'll have no use for it. I got the UQ on sale days before leaving for $149. I think $125 is fair. Almost forgot...I also have the suspension straps and biners for the UQ. I'll throw those in. All these prices do not include shipping.
Shoot me a pm if you're interested.