There's probably an "unmet need" for your service out there, but I don't have a feel for the size of the potential market. Likely a "boutique" service, but worth trying.

If you factor in set up time, etc. even a speedy input might take 5 minutes per chip on average? That's 12 chips an hour @ $25 cash per hour = $2 per chip, plus per diem, etc. For expensive chips, a $2 cost is manageable; for common chips, it would be a noticeable fraction of value. (Though if it prevented duplicate buys in the future, that would add value for the service.)

Another market opportunity to consider: When chippers pass away and relatives / estate executors have a bunch of chips to organize and market, a service that helps them to assemble sales lists might be useful. Get some competition in bidding for parts of the collection, rather than one dealer buying everything, but at a lower price.

One small suggestion -- if you primarily use a spreadsheet to itemize the collection, then individual pics by camera may not be needed. Instead, use a flatbed scanner to capture images at a page at a time. The scanned pages also easier for marketing a whole collection, if that's the intent.

Good luck with your business idea. Hope it's successful for you. (If you launch the business, do a business card to replace your current card in the monthly club newsletters.)