Was just at Best Buy and saw a sign for the Alcatel Pulsemix with Power battery back (think Moto mod) for $9.99. Turns out you get that price when you activate in-store which requires at least $30 plan.
Decent specs for $40 including a month of service:
-2GB RAM, 16 GB internal storage with up to 128 GB optional expandable MicroSD memory, and 1.5 GHz quad-core processor
-Striking 5.2" HD split-screen display and crystal clear audio from the front facing speaker and 2800mAh battery allows for hours of video watching on the go
-13 MP rear-facing and 5 MP front-facing camera with LED flash that captures beautiful images in any light
-Ultra fast 4G LTE with Nano-SIM, Android 7.0 Nougat, and the unlocked freedom to choose most carriers. Compatible with AT&T, T-Mobile, and Verizon networks.
Fun, function, and personality with SNAPBACK covers featuring flashing LED lights with Color Catcher to pull color elements from the environment
This is locked to Cricket for 6 month. It does require activation but you can get a new number. Port isn't required and I think they said you can't port a number if you want to deal. Something about their system doesn't "do ports". But anyway - this seems like a pretty good deal!