So maybe the Galaxy S6 doesn't strike your fancy because of the non-removable battery or lack of a microSD card slot. No problem—you can pick up an unlocked Galaxy Note 4 right now on eBay for a relative pittance of $470.

This is the N910A model, meaning it's intended for use on AT&T. It will work on any GSM carrier, and it should get LTE on T-Mobile via band 4. HSPA+ on T-Mobile will only work in areas that have the 1900MHz re-farm active. You should have no problem on AT&T and its MVNOs. Also be aware this is a refurbished device.

The price includes free shipping in the US, but it will ship worldwide if you want to pay for it. Sales tax will also be charged in California.

Source: Samsung Galaxy Note 4