Costco offers its members preorders of the Apple iPhone 6s Plus 128GB 4G LTE Smartphone for T-Mobile in Silver, model no. MKUY2LL/A, Space Grey, model no. MKUX2LL/A, Gold, model no. MKV12LL/A, or Rose Gold, model no. MKV22LL/A, bundled with a $25 Costco Gift Card and Accessory Bonus Pack, for $949.99, which can be paid through T-Mobile with $199.99 down followed by 24 monthly installments of $31.25 if you opt for a 2-year agreement. This $100 mail-in rebate (paid as an additional $100 Costco gift card) cuts that to $849.99. With free shipping, and assuming you'll use the gift cards, that's the lowest total price we could find for the phone alone by $25 and the first discount we've seen on the iPhone 6s Plus. Deal ends September 24. The phone is scheduled for release on September 25.

This new model's features include an A9 chipset, 4.7" 1334x750 Retina HD display with Ion-X glass (the same as the Apple Watch Sport models), 2GB RAM, 128GB flash storage, 802.11ac wireless, Bluetooth 4.0, 12-megapixel iSight camera with 4K video recording, 5-megapixel FaceTime HD camera with Retina Flashadditional multi-touch features (including 3D Touch), Taptic Engine (for haptic feedback), and 2nd-generation Touch ID.

A $15 activation fee applies.