Wi Fi Range extenders

[Jay500]

I have the standard Sky broadband router and am looking to upgrade my sons Xbox 360 to Live so need an internet connection in his bedroom which is in the loft. As the wireless connection is weak up there I thought of buying a range extender. PC world currently have a Netgear AC750 for £25. Has any one had any experience as to whether these will actually work?


Thanks for your help.