This is a bit off topic as its not original art and not Star Wars. But it is still an interesting type of art print and an interesting example of perceived 'value'.
Its a production made copy of Joe Johnston's original art, called a 'dyeline'. See the link in my signature for more info about dyelines. After the production of the first Star Wars movie back in 1977, the same ILM team also worked on the production of Battlestar Galactica (1978). The now obsolete dyeline process was used to create 'master copies' of original artwork for use in producing sets, models, and special effects. Other cheaper copies called cactus prints were created from those dyelines. Its not something you can just crank out on a whim and creating dyelines was an involved and expensive process.
Anyways, long story short... the other day when I was looking around at Joe Johnston related items for sale, I came across a seller offering a couple of BSG dyelines for a very inexpensive price.
Below is a link to a movie prop website that shows the same dyeline. Notice though that the person's wording refers to his as a 'replica' and says in the picture (shown below) the original artwork is hanging on the wall in the background. Frankly, that's not the case at all.
The original artwork was NEVER pinned to the wall at ILM. What you see on the wall in the background is the very same dyeline, except that because its fresh it looks purple on white. They all looked like that when new. The dyeline process uses light and special chemicals to create the print. But the prints are light sensitive and will yellow with age and continued exposure to light.
So what you see in both images is a production made dyeline copy of Joe Johnston's artwork, created back in the 1970's for the production of the movie/tv show. It is not a modern 'replica'.
The one above cost me $30 if you can believe it. I'm sure the only reason it wasn't snapped up sooner is that people didn't know what it was, and perhaps the fact that the seller listed it poorly. Someone had an 'offer' on it and I just shook my head and hit the BIN. Sorry if that was anyone here, but it was so worth $30, and much more IMO.