There are 19 Roy Foster trading cards tracked on HobbyCardIndex, spanning Baseball, Soccer, Football. The most valuable is the Roy Foster [Black] #61 at $4.95 raw.
Source: HobbyCardIndex · Updated daily · https://hobbycardindex.com/players/roy-fosterRoy Foster Cards
19 cards · Baseball Soccer Football
All Roy Foster Cards
Roy Foster [Black] #61
$4.95
Roy Foster #119
$2.65
Roy Foster #107
$2.23
Roy Foster #107
$1.99
Roy Foster #329
$1.99
Roy Foster [Gold] #102
$1.61
Roy Foster [Colors] #303
$1.59
Roy Foster #303
$1.50
Roy Foster #241
$1.50
Roy Foster #329
$1.49
Roy Foster #52
$1.40
Roy Foster #327
$1.40
Roy Foster #29
$1.36
Roy Foster #102
$1.00
Roy Foster #178
$1.00
Roy Foster #327
$1.00
Roy Foster #29
$0.99
Roy Foster #215
$0.99
Roy Foster [Disclaimer Back] #327
$0.25