There are 13 Mark Greig trading cards tracked on HobbyCardIndex, spanning Hockey. The most valuable is the Mark Greig [First Day Issue] #386 at $2.99 raw.
Source: HobbyCardIndex · Updated daily · https://hobbycardindex.com/players/mark-greigMark Greig Cards
13 cards · Hockey
All Mark Greig Cards
Mark Greig [First Day Issue] #386
$2.99
Mark Greig #89
$2.00
Mark Greig #431
$1.99
Mark Greig #273
$1.92
Mark Greig #301
$1.39
Mark Greig #386
$1.39
Mark Greig #383
$0.99
Mark Greig #456
$0.99
Mark Greig #537
$0.99
Mark Greig #175
$0.25
Mark Greig [Members Only] #386
$0.25
Mark Greig #431
$0.25
MARK GREIG #456
$0.25