Posted By:
Eric BrehmFor PSA, the downside to being too generous with the half-grade bumps is that it will diminish their reputation for accurate grading. In my opinion they will have condition standards (centering, etc.) that will be applied as objectively as possible. In theory, somewhere in the neighborhood of half of the cards submitted should get the bumps.
PSA plans to release SMR values for half-grade cards in the near future. Since there won't be any actual sales figures to base these on, they will start with initial estimates (33% above next lowest whole grade value maybe?), and then refine these over time as they see how the market reacts to the new system. Of course since people do tend to use SMR as a guide for purchasing, these figures will influence to some degree the way the market does in fact react.