Here is my take on this.
1. Sleeving will be a discount argument whether good or bad.
The amount will depend (MHO) on who wants to buy and who wants to sell. I would use it as a bargaining chip in every case, and I suspect the market operates that way.
2. I think we do know how Ted feels about this. Maybe he should give it a rest.......


Dumb, but learning...Prof Em, BSc(ME), CAE (FYI)