Walmart offers the refurbished Apple iPhone 5s 16GB Prepaid Smartphone for Straight Talk in Silver or Gray for $49.99 with free shipping. That's tied with our mention from two weeks ago as the lowest price we've seen for an iPhone 5s 16GB without a contract. (It's the best deal for a refurb for Straight Talk today by $80.)

Note: A 1-year warranty applies, but it's unclear who provides it.