Woot offers Mountain Hardwear Womens Threshold Pant for $19.99 (reg. $150) free shipping with Prime. 

Product Description:
A 3L, waterproof and breathable pant with 100% recycled fabric for backpacking-friendly durability and packability.

• 3-layer shell fabric is waterproof and breathable
• Elastic waistband with snap front closure and zippered fly
• Drawcord adjustment at waist
• Zippered hand pocket
• Highly packable design stuffs into its rear pocket with internal carabiner clip loop 
• 100% Recycled Nylon