Marco, without giving figures, since I know you won't, can you tell us how well the trades have done, generally? I can say now, without hesitation, that the only reason I didn't buy the eBooks first time around is that I had nothing to read them on bar my laptop and I simply won't do that, otherwise I'd never get off the damn thing. Now that Sony have deigned to release the PRS-505 Reader here in the UK, I have ordered one and as soon as I get it and install the software and set it up, I shall buy the entire CoE series (the eBook compilations anyway). I don't know about anyone else, but the lack of a decent and reasonably-priced reader was my only hold-out and that ship has sailed.
Can't. There's a difference. Well enough to continue publishing them. But they're aren't yet at the level of Mirror/Myriad Universes, or the short story anthologies.