lots of good reviews about it being authentic! unfortunately, this is just the small blahaj, not the big one https://www.amazon.com/IKEA-BL%C3%85HAJ-soft-toy-shark/dp/B087QFCTBT/ref=mp_s_a_1_3?crid=2PP193W4E7ETD&keywords=blahaj&qid=1670853346&sprefix=blahaj%2Caps%2C184&sr=8-3#aw-udpv3-customer-reviews_feature_div
Best price I could find online since I don't have an IKEA within a 3 hr drive that has any. Hoping the customer comments are legit and it's got the official tags and stuff.