Used cycling top: £200

Allied with Team GB's superb successes at the Olympics and Paralympics, has been the uber-cool Stella McCartney kit that they've been wearing.
The limited availability of the cycling kit has led to a boom in the second hand market for the abstract Union flag design.

Available now on ebay

If you have a look on eBay for Team GB Olympic cycling kit, you'll find that jerseys are demanding hundreds of pounds and people appear to by paying it.
You'll also find, what some people refer to as 'cheap Chinese replicas' going for £30.
Apparently the 'originals' were manufactured in Italy rather than the far east but given that almost everything else is made in China, there's probably very little difference between the two products.
It all rather makes you wonder why the kit isn't still available.  Profits could go back into legacy or whatever.