Gigabits of speed and 1 ms latency are fantasies outside of research labs.
100-500 Mbps typical
Based on dozens of reports and 10’s of thousands of tests. Occasionally higher or lower but max speeds are exceptions. Verizon mmWave does better.
30 milliseconds latency
Verizon. More tests. 30 ms compares with ~40 ms on 4G LTE at Deutsche Telecom and Vodafone UK. The difference between 30 ms and 40 ms is insignificant to most applications, including video.
Prices for decent phones down to US$285-530
Xiaomi is bringing the price to < $300 in January 2020. A complete table of phones available.