I had the same issue looking for an Olaf plush. I went to a Disney Store about 2 hours away from me last week to do some last minute shopping. I asked the cast member stocking the Frozen section if they had anymore small Olaf plushies and he said they are sold out company-wide. The Disney Store I went to still had the big Olaf plushies though.
I will have to try Walmart next time I go there.
I will have to try Walmart next time I go there.