I pulled this off a blog post from Dio's myspace, so it should be correct...
The presale for all Heaven & Hell shows in August, except Baltimore, begins Wednesday May 6 at 10AM local time at www.ticketmaster.com or www.livenation.com, depending on the market.
The password for all presales is DEVIL!!!!
Tickets for here in Seattle are $40 to $80 each. Damn expensive, but I have to hear Dio fronted Sabbath before I die, so I'll be coughing up the cash for it.