My reference book is very out of date now, but I'm afraid even in 1997 the comics were only valued at 50 pence for the first one and 25 pence for all the others. You might do better than that with nostalgia factored in, but unfortunately the only weekly comics in this country that tend to do well are ones featuring recognised artists, such as Bisley 2000AD issues. There also tends to be a habit of people releasing CDs full of comic scans these days which might mean even more competition... Sorry it's not better news. The only other thing I can suggest is keeping an eye on eBay to get a feel for current prices.
Andy Thomas - SFXB Webmaster and Forum Moderator