What do people regard as the definitive guide to record grading?
There often seems to be quite significant differences between sellers.
Also differences between to UK and US as to the use of grade (M, E, Vg & G. The use of +’s & -‘s)
If a record is worth £100 in mint condition, what % of the £100 should you use for E, Vg etc?
Is there a ‘standard’ reduction for problems such as WOL, warps, cue burn, surface noise, crack etc?
Would it be worthwhile to create a definitive guide?