I think you are wrong. In the past, I could 
participate to their big auction even thaugh I 
didn't order the Zenbu. I "just" had to pay a 
participation fee, about $5. Knowing that I 
didn't win the item I wanted, I paid it for 
nothing, and I find that too bad, but well, I 
knew it could happen !

Did they change the rules ??