I was at the Museum on Sunday 200119. The lady in the gift shop made me aware that there was an online site for the customized prints. We looked in detail at the cost of ordering the prints and determined that I would save (about 78 euros) if I ordered after I returned to the states.
Improvements or suggestions
The web site is not readily available or it is not highlighted on the museum website. I had a great deal of difficulty finding it. You would be better served if you made the museum shop, gift shop, and customized prints site explicitly available (perhaps a pull-down on the menu bar) on the museum home page.