Ebay offers Hey Dude Women's Wendy Sox Slip-On Shoes for $20.99 (reg $34.99) with free shipping.

Product Description:
With its perforated upper, easily adjustable laces with custom toggle keeper and ultra-cushioned insole, the Wendy Perf Sport takes first place in comfort.
Shoe Specs:

• Textile upper
• Elastic laces with toggle keeper
• Lightweight outsole
• Flexible outsole
• Heel pull for easy on/off
• Travel ready
• Removable foam insole