The patents makes it seem like the SSD will have optional sizes you can pop in and out like a N64 expansion pak or 360 HDD.
Yeah even more reason to think it won’t cost that much
1TB SSDs are $100-$130 for PC accessory makers, that’s sold at 3-4x cost. They likely cost $40-$50 max to make, Sony will get an even bigger discount on it because they can guarantee 50-100M units vs maybe 100k-1M for a PC parts maker.
So a 1TB SSD will likely cost Sony $30-$40 per unit, about the same as a 500GB HDD in 2013