For most people it comes down to not being worth taking the time to prune. Without attempting to shop around I'm seeing something like $25/TB for large drives.

For most people it comes down to not being worth taking the time to prune. Without attempting to shop around I'm seeing something like $25/TB for large drives. A photo and it's corresponding .RAW (for those of us who shoot cameras that record such) takes maybe 20MB unless you have some pretty high end gear. 50,000 photos per terabyte. 0.05 cent per photo. If you work at minimum wage that's about a quarter second of your time. You're much better off working and buying a bigger drive than in pruning unwanted photos.