seems legit - it's the same "Power" seller as for the AVATAR 3CD set
I can't vouch for the seller but the promo was real, issued also to BAFTA members. I have one: 52 tracks, 1.4 hours, does not include the songs, and it is not intended for commercial use, or resale. It's a lovely inventive and atmospheric score, and I was very pleased when Lakeshore issued the commercial CD release last year at a generous 59-minute runtime, including the 'Other Father' song and the Spink and Forcible burlesque number 'Sirens of the Sea.' That was discussed here: