1812: How different are those from the frequently-sold FRS radios? The FRS are pretty useless without line-of-sight areas.
The ad you gave doesn't show any antennas. How long is the whip antenna you mentioned?
License-free FRS radios have permanently attached, size limited antennas and are limited to 0.5 watts. The BaoFeng radios cannot be used legally on the FRS bands. There are some FRS like radios that can be operated as GMRS, a commercial service with a $75 license, but with the antenna limits of FRS if they also work on FRS bands. I don't know of any non-licensed radio bands that the radios can be legally operated on.
These radios may have more RF power, more powerful batteries and better construction than "bubble pack" FRS radios. They must be programmed before use. Google "FCC part 90 radios" to learn more.
Dale B. Dalrymple