Guys, I happened to have a spare ticket for the "Masters of Rock" http://www.mastersofrock.cz/www/index.php?lng=en festival It's from 10th to 13th of July and it has a great line-up. Some of the groups are: DEF LEPPARD, Avantasia, Apocalyptica, Within Temptation, Sonata Arctica, Ministry, Moonspell, My Dying Bride, Haggard and many more! Selling for its nominal price: 4-day ticket - 900 CZK. Write if you're interested