Good for those who are OK with slower data speed.
My experience is limited to BYOD, on unlimited plan for $39/ month.
Of the many phones we have, wind only works on our iPhones. They don't have LTE only 3G network. Data speed is slow, OK for Maps, emails, etc. but not for YouTube/streaming. Often the phone is unable to find any data.
However, $39 for 5GB data, unlimited national calling and text, including international text is quite unbeatable.