25G BD-R can be had for 8 ct. However, the patent license royalties are at about 10 ct (I forgot if USD or EUR). Also, you can't retroactively pay the royalties

25G BD-R can be had for 8 ct. However, the patent license royalties are at about 10 ct (I forgot if USD or EUR). Also, you can't retroactively pay the royalties when importing. Patents are bad. They would have developed BluRay without patent protection.