That's a great point!

Of the things I have that have this kind of inflated value, one in particular is absolutely 100% a work of art - I happen to think one of the most stunning eurorack modules ever made, out of print, and totally unobtainium!

For a bit of a giggle I did a quick search for expensive 'rip off' art:

https://www.oddee.com/item_98781.aspx

Suddenly, someone charging #5K for a rare module seems like a bargain!