Tools used to author titles for replication start around 4k and go up to 50k.
Also there are too many pitfalls and rules that go into producing a title that I wouldn’t suggest going it alone unless you’ve done your homework.
Lots of embarrassed producers out there who think BD is just like DVD and end up loosing time and money on a project that was doomed from the get go.
Start with books like Blu Ray Demystified and go from there. 🙂