Yes, Amazon has reviews for different products mixed. They have the R2 DVD reviews mixed in with the UK, region free, BR set. Amazon US rarely gets "region free" products listed properly. Big Bang Theory is from Warner Brothers. All of their BR product is region free. So is BR from Paramount and Disney. If any of those 3 have region locked BR product I've not yet seen it. The BR set at Amazon UK did go up. It's now ~$83 US shipped.