Again, wasn't criticizing anything for being official or not. My crit was about this print being a mix of 2 styles that don't mesh imo-- large portions of landscape made up of cloned & bitmapped photo textures, with a comic style silohuette slapped on top. Not to mention that in order to pull off that dramatic glow, the day image must have a pretty big yellow blob of GID ink in the middle, which is probably the reason for the monotone yellowish color choice (Any pics of the actual print?).
You mentioned this print as one of the "2 most desirable ones"--based on short term EB "hype" value I guess? It's easy to confuse an artist's following here with what's noticed by the general public outside this forum. I found out about LE GOT posters through other channels and didn't even know about this one until I came here, whereas the official prints I noticed being discussed/posted everywhere in the GOT universe. Just because many of these fans aren't hardcore collectors who flock straight to ebay the day after the show or put a specific print in an ISO here just doesn't mean anything in the grand scheme. Anyway you can point to a short term "flip factor" if you'd like, but the fact is that in every collectible market that's ever existed, official stuff will most likely remain more desirable once short term hype wears off.
Regarding there being a big yellow blob of GID ink in the day image, you must have never seen an Englert in person because he always does a stellar job of hiding the GID ink so you do get 2 separate images, see any photo of This is my farm or Det er en slag ting. Your claim there is entirely baseless and ignoring all of his prior work, why dont you inform yourself before insulting the man's work.
As for disregarding the enthusiasm behind Englerts GoT piece and Horkeys, you seem to just be ignoring all the positive feedback regarding those here and on other art forums, and how much it outweighs the hype(or lack there of) around the other GoT prints(are you choosing to also ignore the Englert hype created on Reddit as well, which didnt come about for any of the other GoT prints even with the ever present Mondo hype surrounding their series). And the secondary market for those prints would seem rather indicative of how many people are pursuing the print, as, ya know(or maybe not), the more people pursuing it the higher the price tends to be, and people are willing to shell out more for art they like more.
And yes this is a collectible market, but its also an ART market and the QUALITY of the art(which you've stated in your (minority)opinion is low) tends to speak more to its value than whether or not it has a GoT stamp on it.
the Art > the title/the presence of a license in the art world
IIRC Olly Moss' Dr Who print was unlicensed, and Im still waiting for the price on that to drop since real collectors arent after it
EDIT: man that yellow blob in the pic above is just hideous