This deal is not for everyone but it's a very good deal on some titles for those interested. JB HI-FI is offering BOGO on select Blu-ray, 4K movies and some Blu-ray/4K box sets. It's an Australian site but it's very reputable. I have purchased from them many times in the past. My last purchase was Joker Steelbook in 4K which I received in 3 weeks.
Just a note that delivery can take a month to arrive but you save a lot of money. Prices you see are in AUD (Australian Dollar) so do the conversion yourself to see what your total is in USD.