It may be coming up on 18 months old, but the LG G2 is still a capable device. At this price, though, it's a steal. You can pick up an unlocked G2 (the AT&T model) for $189.99 with free shipping.
The G2 has a 5.2-inch 1080p LCD, Snapdragon 800 processor, 2GB of RAM, 3000mAh battery, and 32GB of storage. This is the D800 for AT&T, but it's unlocked to work on any compatible network. You should be able to get it working on T-Mobile's LTE as it supports band 4, but HSPA+ will only work if you're in a 1900MHz re-farmed area.
You have your choice of white or black phones. This is a new device and will ship to most of the world, but free shipping is only available in the US. You'll pay tax in California as well.
Looks like this deal is back. All the details are the same, so go nuts.
- LG G2 on eBay