Six years ago, Dave asked me for my analysis of what the original art market was like for Cerebus stuff on eBay. I recently came across my reply to him.
September 1, 2000
There have been around 7-10 pages per year showing up. There have been 2 covers in the last 2 years (Cerebus in the Wall of the Hotel in Church and State, with Bear looking on; and issue 4). There has been 1 of the pages from the Young Cerebus run in Epic Illustrated. There has been 1 cover from the "Friends of Cerebus" fan magazine (Cerebus in Jaka's lap). There are maybe 12-18 sketches or more complicated art pieces that show up each year. Most of these are convention pieces, I think. Every now and then you also see the premium stuff, sculptures, figurines, the stuffed toys, etc.
Pages without Cerebus or "historical significance" still go for $175-250. I recently picked up the two pages for "Boom!" for $175 each, and the "Rough Pope" splash page with Weishaupt for $200. Then there are the desirable pages with Cerebus and other major characters in them. These run between $350-450. The "Great Dream" page (Issue 72, p 14) I got for $430. The "sketching at the convention" page (Issue 38, p 8) I got for $400. Then there are the ones everyone wants. These pretty much start at $500 and rarely go over $600, but it happens. I paid $600 for the "nyah nyah" page (issue 34, p 4), and $600 for the "good-bye" page from issue 75 (p 20), and $625 for the wonderful full page Cerebus clinging to the raising tower (last page of 102). Most bidders still bail out at $350/400 on these, which I believe is the actual street value.
Hardly enough covers have been around to say too much. I paid $600 5 years ago for the cover to Issue 69 (Cerebus, BooBah and the strange glowing white thing), and $1200 for the cover to Issue 4 (which I consider historically significant). I did not get the Cerebus in the Wall cover with Bear because I heard the guy went off-line with the sale and stopped the auction when someone offered $1200. I paid $400 for the "Friends of Cerebus" cover.
I paid $1025 for the page from Epic, which I love! (issue 26, p 4)
Black and white sketches go for between $25-75.
A black and white detailed drawing can go between $75-125
A colored drawing is generally in the $200 range, although there was a detailed color piece of Cerebus the Pope, on the throne with stained glass in the background, that appeared in Epic, I think, and I paid $350 for that.
Beavers strips run $50-100. I just paid $75 for an unnumbered one that was done by you and Gene Day (at least, unlike the others I have, Day is listed).
Pre-Cerebus pages (I have 4 nearly complete stories now: "Blue Dynamo" and 3 Revolt 3000 stuff) have only shown up as packages of 20-24 pages, and I have been paying $30/page.
That's what I know!