Help Me with Vintage Pricing Rationale

Guys, I am struggling to understand the pricing of vintage cards. From what I can see the SMR is extremely accurate if not a tick undervalued on most cards that are sold in the open market (EBAY). One Drastic exception, which is affecting me right now is with the 1968 Nolan Ryan PSA 8 RC. This card currently has an SMR of $950 but you can't touch this card for under $1500. Being new to these boards and fairly new to the PSA card grading family, why does this card command such a premium over SMR, and better yet, what does it take to get the SMR to update its pricing to a more true market price? Thanks in advance!
0
Comments
<< <i>the SMR is not even close to accurate on most cards. >>
I agree...especially for vintage football
View Vintage Football Cards For Sale
Jeff
PS - Welcome to the forums, and toss your SMR in the nearest trash receptacle.