Well, I look through about $400 per week. I am trying to rescue as many old coins as I can for the next generations. Having fun too.
Do you wear gloves, or just get the gunky greenish fingers from going through so much volume? I used to get a syndrome I called "copper-finger". I just rolled with it, and scrubbed it off later. Didn't like wearing gloves.
The coins are very gunky. I don't wear gloves but do wash good afterward. On coins I intend to keep I may use MS70 very lightly on a soft Q Tip then an alcohol rinse.