You will have to host images on your own server or imgur in jpg format and insert into posts using the insert image button; put the url between the image tags. You can just post the image links if you like. Good luck!
Have to rely on you Casascius collectors, the photos in the Encyclopedia are not high resolution. I stay away from eBay never bought a collectible there. @Kialara says he will auction two Ruby Labyrinths on eBay though that should be fun to follow.
The language on how the auction extends is a little vague there is a good case to be made AdvocateOne actually won. @Kialara decides. With only nine Ruby editions being auctioned this is the most rare Kialara AFAIK I went way over budget because of that.