Here are the average prices that you requested.
1957 Topps Early Wynn #40 PSA 6 $16.00
1957 Topps Billy Pierce #160 PSA 7 15.00
1961 Topps Willie Mays All-Star #579 PSA 6 63.00
1969 Topps Bobby Cox #237 PSA 8.5 85.00
Bruce Dorskind
America’s Toughest Want List
bdorskind@dorskindgroup.com