As one of its daily deals, Macy's offers the 32 Degrees Men's Slippers in Venetian Faux-Suede, Venetian, or Clog styles for $9.99. Pad your order with a beauty item (they start at $3) to bag free shipping; otherwise, shipping adds $10.95, or get free shipping with orders of $25 or more. That's $30 off and the lowest price we could find. They're available in sizes M to XXL. Deal ends December 12.
Before you spend another dollar on items and services like these, check with your public library. You will likely be surprised by what it offers for free.