Generally, the e-shops and regular shops, can only return items that are faulty ect, back to their suppliers within the suppliers own terms and conditions. But, any product will have at least 1 years manufacturers warranty that will cover you anyway.
Has anyone tried
www.it-shop-online.co.uk ? They are fairly new, but I found them really helpful. They advised me on my home wireless network which was all in stock and with me the next day...pretty cool.