Walmart offers the Samsung Galaxy J1 Luna 8GB 4G LTE Prepaid Smartphone for Straight Talk for $29.99. Opt for in-store pickup to avoid the $5.99 shipping charge. That's $70 off and tied with our February mention as the lowest price we could find. Features include:

4.5" HD touchscreen display

1.2GHz quad-core processor

8GB internal storage

5MP rear- and 2MP front-facing cameras

WiFi and Bluetooth 4.1

microSD card slot

Android 6.0 OS (Marshmallow)