With no contract required, CowBoom again offers the used Apple iPhone 4 16GB for AT&T Wireless in Black (pictured), model no. MC608LL/A, for $269.99. Coupon code "dag10" drops it to $259.99. With free shipping, that's the lowest total price we could find for a refurbished one by $183, although we saw a used one for $5 less last winter. Sales tax is added where applicable. It features an Apple A4 processor, 326-ppi (pixel per inch) Retina 3.5" display running at 960x640, gyroscope, front- and rear-facing cameras, 5-megapixel camera with LED flash, 720p video capture at 30 fps, 802.11n wireless networking, dual microphones, and more.

Also available with no contract required is the used Apple iPhone 4 32GB for AT&T Wireless in Black, model no. MC610LL/A, for $289.99. Coupon code "dag10" knocks it to $279.99. With free shipping, that's $10 under our mention from last winter and the lowest total price we could find for a pre-owned 32GB AT&T iPhone 4. Coupon ends June 30.

Note that no warranty information is provided for either model. Also, these used items may have blemishes and be missing accessories.