This depends. If you want to remember the night then yes, because the shirt can serve as a reminder of the night.
it is worth about 250,000
If the shirt is match worn by Beckham with a credible cerificate of authenticity (CoA) then it is worth £500-£800. If it is only a replica shirt then £150-£250 (if you have a CoA or photo of them with the shirt).
The worth of a 1964 Hard Days Night Beatles LP will vary depending on condition and demand. A first pressing that is in mint condition could be worth thousands of dollars to a collector.
Its over $9000
100000000000 billion
How much a Warwickshire cricket team shirt would be, if it was signed by the entire team, would depend. The actual value of the shirt would depend on the condition it is in and if there is any sort of supply and demand for it at the time.
It depends on the shirt (t-shirt, replica jersey, authentic jersey, etc.), it's condition and who signed it.
£40
Probably nothing more than any other t-shirt...
$250
60%