thats because the OG** photo** (left) it is gold lace on a "white dress" (with a blue tint lighting effect etc) while IRL the dress is black & blue. right side is the edited OP photo. the difference is 'night and day' and if these all look the same i've got some news for you. ...........
the 'black' parts are gold in the photo yes they are in fact "nowhere near blue" the part you zoomed in on is the blue/white parts that have a blue tint.
the photo yes but not the dress itself, take the og photo from the wiki into any photoshop with a color picker, and look at the points it marks it on the color range (it shows it between yellow and red nowhere near any blue) its gold stripes in the photo. the "white dress" parts do show up with light blue tint, it all just because of the terrible back light overexposed effect. the real dress yes is blue and black, but the photo is gold stripes with light-blueish white dress.
BrickLink 'new' average sold for the last 6 months is 340~ retail was 200. its a retired set of a beloved 80's set updated, so deff not going to find a new set for less than that. i have one in my collection, yeah i'd prob let go for 340+you cover shipping, but I'd definitely cover shipping for 19k! lol
and yes you to can list anything on ebay for whatever absurd price you want. but even ebay has a sold filter/tracker you should be checking..
and next time if you think the presumptive customer is a pearl-clutcher, say the full name or if you have to abbreviate do the ol' individual G. - I. - M. - P.