just to compare to some other sites...
Circvs Maximus
Estimated Base Value: $129.00
Estimated Actual Value: $2,774.00
RPGnow
Estimated Base Value: $921.00
Estimated Actual Value: $141,374.00
DriveThroughRPG.com
Estimated Base Value: $264.00
Estimated Actual Value: $11,616.00
Wizards.com...