The budget wireless links are far more cost effective than running cables and much faster to deploy so they are more often than not the preferred choice for most installers where cabling is just too difficult.
Clearly a proper 'cabled' IP connection will always be faster in data transfer and also more reliable than a wireless one but where this is not practical or the cost is too high, a wireless 'bridge' is a great solution.
This Budget model has a data transfer rate of 300Mbs using the 2.4 GHz frequency and is aimed at smaller cost-conscious installations.