With streaming giants offering instant access to vast libraries, the humble DVD has been packed away by many and left to gather dust. But the DVD and its successors, the Blu-ray and 4K Ultra HD Blu-ray, are very much alive, and there's a surprisingly lucrative secondhand market for these discs. The most sought-after – think rare releases, limited editions and prized box sets – are highly coveted and sell for big bucks.

Read on to discover 25 old DVDs and Blu-rays collectors are clamouring for and see if you own any of them.

All dollar amounts in US dollars