Since mid March (start of Covid) I've been scanning my negatives and slides (on an Epson v700). I've done approx 17,000. I do a few a day while I'm waiting for various work related tasks to complete. I don't know what the expected lifespan of these Epson flatbeds is but I'm guessing mine's probably done more work than most and it's still working (right this minute in fact! haha!)