There are 20 Speed trading cards tracked on HobbyCardIndex, spanning Baseball, Marvel, Wrestling, Other, One Piece. The most valuable is the Speed [SP] #15 at $16.62 raw.
Source: HobbyCardIndex · Updated daily · https://hobbycardindex.com/players/speedSpeed Cards
20 cards · Baseball Marvel Wrestling Other One Piece
All Speed Cards
Speed [SP] #15
$16.62
Speed [UMD]
$9.99
Speed
$8.29
Speed [Variant Cover] #28
$7.95
Speed #15
$5.99
Speed #43
$5.50
Speed
$5.41
Speed #US39
$4.49
Speed [Gold] #US39
$4.00
Speed #151
$2.99
Speed [Green Foil] #68
$2.63
Speed [Gold Signature Series] #28
$1.73
Speed #28
$1.68
Speed [Rickey Henderson] #646
$1.61
Speed [Orange Foil] #68
$1.59
Speed [Blue Cosmic Cube] #151
$1.51
Speed OP01-104
$1.50
Speed #68
$1.48
Speed [Blue Foil] #68
$0.50
Speed OP01-104
$0.08