to the forum
you will need a wifi network adapter on your pc also if there isnt already one so add a tenner for a cheapo and 20 quid for a good brand to your 50 quid then they will work out similar if you buy a cheap wired router and 2 14mbps homeplugs
cheaper homeplugs here
http://www.homeplugshop.co.uk/acatalog/14Mbps.html the price for 2 14mbps there + £48 same price as the router