50% off Relic Trolley Suitcases @ Tesco. Our local Tesco Extra had limited stocks instore (at the same prices), but also available online. Prices are:
Extra large: £10.98
These are reasonable quality, and good value for money imho. I have used these suitcases before, and would suggest they are best suited (pardon the pun) to the less-frequent traveller.