Walmart offers the refurbished Apple iPhone 6 32GB Prepaid Smartphone for Straight Talk in Gold for $69.99 with free shipping. (You can opt for pickup to cut that to $69.29.) That's around $80 less than what you'd pay for an unlocked refurb elsewhere, although we saw it for $20 less in December. Note: No warranty info is provided.
If you have or expect to have a modest retirement income, you may want to avoid spending your golden years here.