A few months ago I bought the WUSB54G USB Adaptor from Amazon for my husband's computer and it has gone up two or three times since then from about £24 to over £29. It works very well but I needed another one to use with my spare computer and I found a similar Linskys one in Tesco Extra today for £19.99. It appears to have exactly the same spec but the model is HU200 and the brand is Linskys @ Home and it is white whereas the original one is Linskys blue and standard Linskys brand.

I also noticed that the corresponding router at Tesco was about half the size of the one I bought from Amazon and also white so I wonder if Linsky @ Home is an inferior product manufactured for non specialist stores. I have not yet taken it out of the packaging and will take it back if it is inferior to the one sold at Amazon and PC World.