I can't justify that much for Dengar and IG-88. Maybe I would have if it was Bossk instead of Dengar, but he is the absolute worst figure choice for this format IMHO. I won't keep a big box or these carded at all, and I can find pretty minty originals for less than this.
I think you would be hard pressed to find quality originals of Dengar and IG-88 for less than $13 each. Even if you did, they would be without weapons. I have a full set of vintage carded figures, but this is a great option to experience those figures (carded or loose) without paying thousands of dollars. I really love the look of the old vintage stuff, so getting these vintage style figures, the Jumbo 12" versions, retro figures for new shows/movies, etc. is super appealing to me.