I can reduce all my dvd media by 1/6 just like with cd to dvd
100 dvd reduced to 17 blueray will mean that i don't have to shuffle disc to find what i want. higher capacity also mean faster transfer rate to your computer
in 2-3 years it will probably be around 100-200
4-5 years 50-99
and 6-7 years 30-40 bucks.
For those who want until it drops to 30 bucks, not only do you get to burn it faster you also save a lot of money so that's a much better investment then paying much more right now