I completely agree.
Ive heard this same thing about many comics, including AF 15, TMNT 1, etc. etc.
I personally think that WD 1 is THE grail of the modern age,and that it will keep rising in price.
You have the perfect storm. Desirability, low production, and now an icon in pop culture.
There are far too few books, and far too many people wanting one.
I said this before, and I'll say it again. This book will one day get to the price range of the TMNT 1's
So naysayers have fun with your predictions, it will happen regardless of your thoughts of demise.