When I was going to digital storage a couple of years ago, I bought a Nikon scanner, and quickly realized I was utterly incapable of a task that repetitive without going insane, lol. I use it for scanning new chromes I shoot, that I like, and little else.
Any hero images that I really like, I had them drum scanned, and for the tens of thousands of chromes I had shot since the mid 60s, I started using www.scancafe.com. They are not quite the resolution of the Nikon, but they do clean up and are very viewable...PLUS you only pay for the scans you choose to keep. All their work is done by hand, and i have been very happy with the care they have shown my chromes.
Also, they are always offering deep discounts via email, they quote $0.29 per, but I have never paid that. Since I was in no great rush to do all these, I wait for a sale. I would say I probably have averaged less than $0.12 per chrome. First of all, it has made an onerous task much easier, and I really like not having to pay for scans I don't care about.
I probably have drum scanned about 30 images that I rediscovered through this method, and sold enough copies to make this process free. I still have many more boxes to go through, but I have about 10TB of storage for my work so far.
I like this method because it is cheaper than buying a scanner, and frankly if I like an image enough to work with it again, I am going to want a drum scan anyway.