In-store only, MetroPCS offers an Apple iPhone SE 32GB 4G LTE Prepaid Smartphone for MetroPCS for free when you switch carriers and adopt a MetroPCS Unlimited High-Speed Data Plan (starting at $50/month). That's the best deal we could find for this phone on any prepaid carrier by $160. It's also the first time we've seen an iPhone SE 32GB offered for free anywhere.
The planet will thank you, your local (overwhelmed) landfill will thank you. Even your budget will thank you.