I bought one of the last few of these a week ago.
Confirmed working (phone/4g data/text/mms) on Page Plus(Verizon prepaid), although it did take some google searches to get the APN setup.
Not sure if there's an overall consensus on these phones just yet, but it's been good to me so far.
The $20 coupon on the product page drops amazons price down to $200, which matches urlhasbeenblocked and Alibaba prices. Mine shipped from NJ(I'm in NY), had it in 3 days without prime:
It's dual SIM, but if you want a micro SD (manufacturer claims up to 256gb), it takes up one of the spots.
I'll save you the initial search on specs:
UMIDIGI F1 Play
Processor. 4x 2.0 GHz ARM Cortex-A73, 4x 2.0 GHz ARM Cortex-A53, Cores: 8.
RAM. 6 GB, 1800 MHz.
Storage. 64 GB.
Display. 6.3 in, IPS, 1080 x 2340 pixels, 24 bit.
Camera. 4672 x 3504 pixels, 1920 x 1080 pixels, 30 fps.
Battery. 5150 mAh, Li-Polymer