Mankey

Mankey (38/112), the Uncommon from FireRed & LeafGreen, has an estimated ungraded market price of about $1.55. Note: 21 other cards named Mankey exist across the sets Riffle tracks, at very different values; check the collector number.

This page covers Mankey (38/112), the Uncommon (about $1–$2) from FireRed & LeafGreen.

The other versions: #92/147 from Aquapolis (Common, about $20–$26); #169/91 from Paldean Fates (Shiny rare, about $5–$7); #53/95 from Unleashed (Common, about under $1); #61/82 from Team Rocket (Common, about under $1); #81/110 from Legendary Collection (Common, about under $1); #55/64 from Jungle (Common, about under $1); #112/147 from Supreme Victors (Common, about under $1); #59/116 from Plasma Freeze (Common, about under $1); #79/106 from Great Encounters (Common, about under $1); #52/114 from Steam Siege (Common, about under $1); #50/111 from Crimson Invasion (Common, about under $1); #71/181 from Team Up (Common, about under $1); #042/84 from Pitch Black (Common, about under $1); #106/193 from Paldea Evolved (Common, about under $1); #056/165 from 151 (Common, about under $1); #107/198 from Scarlet & Violet (Common, about under $1); #66/163 from Battle Styles (Common, about under $1); #090/182 from Destined Rivals (Common, about under $1); #133/264 from Fusion Strike (Common, about under $1); #045/91 from Paldean Fates (Common, about under $1); #098/191 from Surging Sparks (Common, about under $1).

The collector number printed at the bottom of the card is the reliable way to tell them apart.