Generally if supply is equal a PSA will bring more on the vintage side since demand is higher for PSA graded cards on the vintage side. In the case a 1958 Topps Jim Brown Recent Ebay Sale Show:
BVG 2 $115
BVG 4 $169
BVG 4.5 $170
BVG 4.5 $193
BVG 5.5 $273
PSA 3 $136
PSA 3 $194
PSA 4 $249
PSA 4 $200
PSA 5 $260
PSA 5 $329
Two PSA 8's sold for $1,790 and $2,051
If you have a BVG 8, which has a low population but you have a select few of BVG collectors they could bid the price up to the $2000 range or higher.
I believe BGS has the higher demand in the Relic/Auto Era. But PSA has kept good pace.
BVG 2 $115
BVG 4 $169
BVG 4.5 $170
BVG 4.5 $193
BVG 5.5 $273
PSA 3 $136
PSA 3 $194
PSA 4 $249
PSA 4 $200
PSA 5 $260
PSA 5 $329
Two PSA 8's sold for $1,790 and $2,051
If you have a BVG 8, which has a low population but you have a select few of BVG collectors they could bid the price up to the $2000 range or higher.
I believe BGS has the higher demand in the Relic/Auto Era. But PSA has kept good pace.
Collecting Bob Feller, 1951 Bowman, anything Cleveland.