I'm, uh, offering hard cover editions of my comic, all five years. But they're bloody expensive and done by hand, by me. Also, I wouldn't recommend buying one until I've had some more practice in making them. It's hard to keep the wrinkles out, believe it or not.
I've seen some hard cover comics down at my local bookstore. I should check to see which ones are webcomics. I think a couple of them are. I'll come back here and report them if so.