Finally BJ management gave up, and option for DC ticket only is now available on Polish Eventim (thanks dewey1961 for the info):
http://www.eventim.pl/bon-jovi-bilet...ix&kuid=466683

Now I am really tempted to upgrade my Golden Circle Fast Track. Really tempting, although still it has its pros and cons (apart from higher price only).
Although I think this decision came a little too late as most of the Polish die-hard fans have bought their tickets already, because even if they wanted to be in DC at first no one could afford the damn package for almost 1500PLN, which was more than 4 times more than the cost of regular GC. 790PLN for DC ticket only is much better option and at least it’s available now. Better late than never I guess.