There are a significant amount of iPhones on Ebay and Craigslist that have bad ESN's. They are essentially phones that the owner did not pay the bill on and Verizon, AT&T, etc cut them off and locked the phone out so it is useless as a phone. They can be had for very reasonable prices.
Or deals like this on refurb phones pop up too: https://www.woot.com/plus/iphone-6-6...t_gw_dly_wobtn
To me it is simply a matter of principle. I can't bring myself to buy anything from Apple so I will remain optimistic that MRT will deliver on Android soon.