Mobilepros1 via eBay offers the refurbished Unlocked Apple iPhone 5s 16GB Smartphone for GSM Networks in Gold, Silver, or Space Grey for $169.99. Coupon code "CMADNESS20" drops it to $149.99. With free shipping, that's $16 below our mention from yesterday and the lowest total price we've seen for an unlocked iPhone 5s 16GB. (It's a current best for a refurb by $13.)

Note: No warranty information is provided. The coupon is limited to one use per PayPal account.