[Midvale]

It partly will depend how fussy you are and what you plan o do with them.

I scanned in 4,000 or so using an Epson Perfection 2400 flatbed scanner with a transparency attatchment. I could put 4 slides at a time and it would scan them in about 8-10 minutes @ 1200dpi or so. I was just interested in being able to enjoy them on a computer screen or digital frame; they were snapshots not works of art. I'm satisfied with the results.

I'm sure new scanners are probably much faster now. They also sell dedicated film/slide scanners which may do a better job.