As the big budget film Iron Man hits theatres this week, demand for Silver age Iron Man comics has soared as well. According to results found using Terapeak's Hot Categories research tool, Iron man comics from between 1956 and 1969 are super hot on eBay this week. This trend chart shows the last two years of activity in category #32735: As you can see, listings and sales are both way up. Last week over 600 listings were posted in this category, generating $27K in sales. That's impressive activity for 40-50 year old collectibles. Notable listings this month: IRON MAN & SUB-MARINER # 1 (1968) sold for $4650.00, making it the highest priced listing in this category in April. The INVINCIBLE IRON MAN Complete Collection DVD ROM was the most frequently listed title in April. Digital formats for comic books are a growing industry. Iron Man, starring Robert Downey Jr. and Gwyneth Paltrow, opens in theatres across North America on May 2nd, 2008.