I've tested all the albums and all play fine on my machine. Most are is excellent condition unless otherwise stated on the listing. Starting bid listed beside each item, most starting in the £3 - £5 range, depending on prices elsewhere.
https://goo.gl/TpdGrC" rel="nofollow - Blind Guardian - Tales From the Twilight World £5
https://goo.gl/nEcjzj" rel="nofollow - Blind Guardian - Somewhere Far Beyond £5
https://goo.gl/rpnGcU" rel="nofollow - Blind Guardian - Imaginations From the Other Side £5
https://goo.gl/pT5TXT" rel="nofollow - Blind Guardian - Nightfall in Middle-Earth £5
https://goo.gl/tTJvsZ" rel="nofollow - Blind Guardian - A Night at the Opera £5
https://goo.gl/AD4fMG" rel="nofollow - Blind Guardian - A Twist in the Myth £4
http://goo.gl/s1VKVp" rel="nofollow - Borknagar - Quintessence £7.50 (rare)
https://goo.gl/DkarjX" rel="nofollow - Cathedral - Supernatural Birth Machine £5.50
https://goo.gl/oTg3Ny" rel="nofollow - Dimmu Borgir - Death Cult Armageddon £3
https://goo.gl/Q3cgL4" rel="nofollow - Gamma Ray - Land of the Free £5
https://goo.gl/eN5pzD" rel="nofollow - Gamma Ray - Somewhere Out in Space £5
https://goo.gl/rXsaaJ" rel="nofollow - Gamma Ray - Power Plant £3 (missing CD tray insert)
https://goo.gl/G7dRKR" rel="nofollow - Gamma Ray - No World Order £5
https://goo.gl/CEBtk9" rel="nofollow - Gamma Ray - Majestic £4
https://goo.gl/4PEHjj" rel="nofollow - Helloween - Walls of Jericho £3
https://goo.gl/FyfL4F" rel="nofollow - Helloween - Keeper of the Seven Keys Part I £5
https://goo.gl/b8WVp5" rel="nofollow - Helloween - Keeper of the Seven Keys Part II £5
https://goo.gl/K3ef4o" rel="nofollow - Helloween - Pink Bubbles Go Ape £3
https://goo.gl/ptU3p4" rel="nofollow - Helloween - Chameleon £3
https://goo.gl/2kunqp" rel="nofollow - Helloween - Master of the Rings £3
https://goo.gl/k2FCD7" rel="nofollow - Helloween - The Time of the Oath £3
https://goo.gl/Lvxsyb" rel="nofollow - Helloween - Better Than Raw £4 (first press with slipcase and poster)
https://goo.gl/3Hepo3" rel="nofollow - Helloween - The Dark Ride £5
https://goo.gl/XpjNXs" rel="nofollow - Helloween - Rabbit Don't Come Easy £3
http://goo.gl/rqJ9Lj" rel="nofollow - Helloween - Keeper of the Seven Keys: The Legacy £4
https://goo.gl/SKmjeF" rel="nofollow - Helloween - Gambling With the Devil £5
https://goo.gl/3h3HWo" rel="nofollow - Immortal - At the Heart of Winter £6
https://goo.gl/Lfrq5C" rel="nofollow - Iron Maiden - The Wicker Man (single) £2.50
https://goo.gl/PCp8WC" rel="nofollow - Iron Maiden - Brave New World £3
https://goo.gl/wqfdym" rel="nofollow - Iron Maiden - The Final Frontier £3
https://goo.gl/SqqGpF" rel="nofollow - Judas Priest - Metalworks £3
https://goo.gl/TQdzmd" rel="nofollow - Kamelot - The Black Halo £5
https://goo.gl/yJmmHT" rel="nofollow - Metallica - Metallica £3
https://goo.gl/GSWW3c" rel="nofollow - My Dying Bride - The Light at the End of the World £3
https://goo.gl/sHPcFX" rel="nofollow - Nightwish - Angels Fall First £3
https://goo.gl/q1cBDB" rel="nofollow - Nightwish - Wishmaster £3
https://goo.gl/HV4h4S" rel="nofollow - Theatre of Tragedy - Theatre of Tragedy £4