Amazon via Woot has Wildhorn Outfitters Outpost I or II Single/Double Camping Hammock (Various Colors) for $26.99. Shipping is free with Prime (30-Day Free Trial) or $5 flat-rate shipping. [amazon]
Amazon via Woot also has Vivere LEVI-01 Levitat Revolutionary Aerial 3-Person Hammock Mat for $130 (57% off). [amazon]