I think you could potentially get up to 10k+ if you sell to the right person and its in the right town.
I think I would have... problem is it was made on a mac. I just couldn't bring myself to do anything but avoid something I know was made on a mac... Though if it wasn't, theoretically I'd live in it. maybe, probably, yes :/
Being an artist and insanely OCD about colors and matching-ness, I'd say no. xP And I do not understand the coa, redstone, and wool/glass above the door. Otherwise, I like it. I have always like houses that were not square, and houses that are kind of narrow rather than really open. And I <3 the roof.
I prefer modern design and more decoration on the inside. This is coming from the kid who worked on a minecraft design wiki. So yeah, i'll probably adjust the heck out of it. Though the roof. I love the roof.
I have to comment that no netherrack was used in the making of this house except for fences on the outside.
I don't think the ores are necessary, and wouldn't add any value whatsoever. I would probably remove them. Also the light blue wool in the front window above the door is a downer for me. This is all personal opinion and I mean no offence.