Posted By:
JimCrandell1)It is certainly not correct that most advanced collectors dislike grading services.
Most advanced collectors consider slabbing mandatory.
Obviously everyone has their preferences and few like PSA, SGC and GAI.
2)While certain collectors refuse to slab cards they have no attention of selling is obviously true, if and when they do sell it will become essential to slab them if they want the highest value.
3)I collect well over 100 sets pre and post war in psa 8 and better and for virtually all the pop in 8 or better is the key deterrminent of value--the lower the pop(for a common) the higher the value. Also the pop in high grade changes very gradually and today's pops in virtually all of the most popular sets are good indicators of what they will be in the future and of relative scarcity and hence relative value.