er... you do realize that the pagerate for digital and print stays the same no matter what, right? For Marvel and DC, talent is paid per page, up front, maybe with an added kickback if the issue sells above a certain threshold. The agreement for digital is no different. Putting out a digital edition does not cost any more in terms of creative than it does print, I have no idea where you got that. And there is actually a HUGE difference between printing 500 and 50,000 copies. HUGE. A friend and I came like *this close* to printing a self published book, we had a table at SDCC and everything, but the cost of printing a book that sold anything less than like 5,000 issues and have it in colour rather than black and white, it would have meant that after factoring in distribution, we would have had to price the comic at like 5 or 6 bucks an issue and try and dig up some advertisers 10 years ago to make it even close to worth the amount of work it would have taken, and we would have had to pay up front, making it a huge gamble. (alternately, we could have tried to get picked up by Image to eliminate the risk, but in the end decided to pursue other things) Printing costs are why paper comics have ads and digital ones don't. On the other hand, the cost per issue of digital really is identical no matter how many issues you sell. Comixology takes a cut per issue sold, but it is nowhere near the cost of printing per issue unless you get into hundreds of thousands of issues, it's about the same as what Diamond takes for distribution, actually, so what you would have spent on printing costs just vanish, (and i am sure they have special deals for Image, Marvel and DC due to volume and the traffic they bring in) and no upfront investment to risk. If we were doing it again, we'd do it as a webcomic, and in fact kinda are, just with a different idea. (and yes, I know there are print on demand places now, but their price per issues is fairly high. though it does at least eliminate up front risk) And if you don't want to take my word for it, maybe you will take Mark Waid's
http://markwaid.com/digital/print-math/
Also, as you say the 5% figure is a guess. while it is true that generally digitial sells less than the paper versions at the moment, we have direct confirmation that certain Marvel books like Ms Marvel do sell numbers comparable to it's print numbers. And the Image stuff, that obviously sells equal to or more than it's print numbers in most cases, you just have to look at the top selling list to see that plain as day. Those readers attracted by Image will spill over into DC and Marvel, particularly if they would stop being so paranoid about undercutting the brick and mortar shops and discount the prices by a dollar right from day one, rather than a month later).