I don't know of one off the top of my head, but I do know that there a few essentials you should not be without if buying a used leaf.
1. 6.6kw charger (All SV, SL, S, w/QC package)
2. Quick Charger (Some SV, all SL, S w/QC package)
3. Hybrid Heater (Most SV/SL depending on year) This is a must for a cold climate or if you have a longer commute.
4. Mobile application/better charge timer (All SV/SL) This is not a must but much more handy than you think. If you are buying an S with QC, get a home charger with WIFI to be able to use some of these features.
I think most of the other stuff is a nice to have but you can do without, such as the LED headlights, alloy wheels, leather, etc...
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