MetroPCS sells a 32 GB iPhone SE for $149, but if you switch to metroPCS and sign up for an unlimited plan you save $150 making it $0. You may still have to pay sales tax.
Not the newest iPhone, but hard to beat free. Hopefully this deal helps someone out there.
Individual unlimited plan $50/month
2 Lines for $80/month ($40/line)
3 Lines for $90/month ($30/line)
4 Lines for $100/month ($25/line)
https://www.metropcs.co