Yeah for me, the dramatic change from old gen to new gen was the 8-bit/16-bit and the 16-bit/32-bit transitions. I still remember being blown away seeing a display showing Battle Arena Toshinden being played at a local movie/videogame rental place way back.
Yeah I don't remember how much it was when I priced Kill la Kill's bluray version at Rightstuf a few months ago but when I did, I was like,"Yikes, maybe I won't be buying that..."