I have around 100-150 DVD blanks left, will be using them out gradually.
But my main backup is now bluray. So basically everything goes to bluray-discs.
Have bought reasonable quality discs at 20-25â‚¬ / 25pack from amazon (including delivery). And if one disc holds approximately 23GB, i have bought 575GB of space for 20-25â‚¬.
I could be using DVD blanks, but the price needed to be around 14-18â‚¬ / 100 pack including delivery. Possible, but not right now.
I don't really trust HDD's as backup because of their mechanical nature. And the price per gigabyte is approximately the same (3TB around 105â‚¬). (OT: I got one HDD which last time was in use in August 2010. After that it has been inside a computer case in outdoor storage with no climate control. Temperatures ranged between -35C and +35C. Brought the HDD indoors about a month ago, left it to warm up overnight, connected it and voila - no problems, happily whizzing away)
And yes, I don't have even one bought bluray video disc. And yes, I do have the hardware and computing power to do it. Unfortunately it just seems that using bluray discs is too hard. DVD's are (nowadays) easy. Pop in the disc, make sure that you have libdvdcss installed and begin watching. I do have quite a stack of bought dvd's, because I can watch them.
Blurays on the other hand do implement such protection schemes that it is hard to justify the time and tinkering needed to simply watch or backup a movie that I have paid - dearly - for.