T-Mobile cuts up to $100 off a selection of 4G tablets as part of its Father's Day Sale. Plus, all devices bag free shipping. Deal ends June 15.

A best bet is the Apple iPad Air 16GB WiFi + 4G Tablet for $528 with free shipping. That's the lowest total price we could find by $96. This 1-lb. tablet is 0.29" thick and features a 9.7" 2048x1536 Retina display, Apple A7 64-bit processor, M7 motion coprocessor, FaceTime HD front-side camera, dual microphones, 5-megapixel iSight camera, 802.11n wireless with MIMO, 4G access, Lightning connector, up to a 10-hour battery life, and iOS 7.