Some of them had some sales iirc (I haven't done any proper research on it though, just a quick check). That could be a sign that the collectors' market could be slowly shaping in. Of course, there's no chance for any massive demand, probably just sentiment buyers.
From my quick search on ebay.com (with keyword "asic block erupter"), there are very few Block Erupter listing which has been sold/has bid. And most them has price <$40. So i still stand with my own opinion.
I think you wanted to say 1 GH/s (not 1MH/s).
My bad it is actually only 144Khs and has Scrypt Algorithm Maybe you never seen in one
Here the picture
I see, i thought you're talking about Bitcoin/SHA-256 ASIC.