Which Onix do you have?

Same name, 50× the price: $0.72 to $36 raw. The difference is printed on the card — it is just not somewhere most people think to look.

Base Set 1st Edition · #56 A black 1st Edition stamp below the left of the illustration. These are also shadowless - the stamp is the thing to look for first. $32 20% gem Base Set Shadowless · #56 No stamp, and no drop shadow down the right edge of the illustration frame. The card looks flatter and slightly paler than the common printing. $3.20 25% gem Base Set Unlimited · #56 A drop shadow down the right edge of the illustration frame. This is the common printing - most Base Set cards people own are this one. $2.48 30% gem Base Set 2 · #84 A set symbol in the lower right of the illustration. The 1999 Base Set printings have no set symbol at all, so its presence settles it immediately. $1.49 25% gem Southern Islands · #3 Check the set symbol in the lower right of the illustration, and the copyright year along the bottom edge. Those two identify the print run on every card that has them. $36 24% gem Southern Islands Japanese · #095 Check the set symbol in the lower right of the illustration, and the copyright year along the bottom edge. Those two identify the print run on every card that has them. $16 27% gem Aquapolis · #98 Check the set symbol in the lower right of the illustration, and the copyright year along the bottom edge. Those two identify the print run on every card that has them. $5.35 38% gem McDonald's Promos 2019 · #9 Check the set symbol in the lower right of the illustration, and the copyright year along the bottom edge. Those two identify the print run on every card that has them. $4.53 4.4% gem Expansion Pack · #095 Check the set symbol in the lower right of the illustration, and the copyright year along the bottom edge. Those two identify the print run on every card that has them. $3.87 42% gem Fire Red Leaf Green · #42 Check the set symbol in the lower right of the illustration, and the copyright year along the bottom edge. Those two identify the print run on every card that has them. $3.65 17% gem Neo Genesis 1st Edition · #69 Check the set symbol in the lower right of the illustration, and the copyright year along the bottom edge. Those two identify the print run on every card that has them. $3.53 22% gem Thunderclap Spark · #034 Check the set symbol in the lower right of the illustration, and the copyright year along the bottom edge. Those two identify the print run on every card that has them. $2.49 75% gem Gold, Silver, to a New World... · #095 Check the set symbol in the lower right of the illustration, and the copyright year along the bottom edge. Those two identify the print run on every card that has them. $2.26 35% gem Unseen Forces · #65 Check the set symbol in the lower right of the illustration, and the copyright year along the bottom edge. Those two identify the print run on every card that has them. $2.24 32% gem Sandstorm · #71 Check the set symbol in the lower right of the illustration, and the copyright year along the bottom edge. Those two identify the print run on every card that has them. $2.09 39% gem Lost Thunder · #109 Check the set symbol in the lower right of the illustration, and the copyright year along the bottom edge. Those two identify the print run on every card that has them. $2.04 <0.1% gem Diamond & Pearl · #92 Check the set symbol in the lower right of the illustration, and the copyright year along the bottom edge. Those two identify the print run on every card that has them. $2.02 <0.1% gem Start Deck 100 · #212 Check the set symbol in the lower right of the illustration, and the copyright year along the bottom edge. Those two identify the print run on every card that has them. $2.00 no PSA data Pokemon GO Japanese · #036 Check the set symbol in the lower right of the illustration, and the copyright year along the bottom edge. Those two identify the print run on every card that has them. $1.99 100% gem Dream League · #029 Check the set symbol in the lower right of the illustration, and the copyright year along the bottom edge. Those two identify the print run on every card that has them. $1.98 100% gem Pokemon Card 151 Japanese · #095 Check the set symbol in the lower right of the illustration, and the copyright year along the bottom edge. Those two identify the print run on every card that has them. $1.94 100% gem Neo Genesis · #69 Check the set symbol in the lower right of the illustration, and the copyright year along the bottom edge. Those two identify the print run on every card that has them. $1.86 25% gem Cosmic Eclipse · #105 Check the set symbol in the lower right of the illustration, and the copyright year along the bottom edge. Those two identify the print run on every card that has them. $1.78 22% gem Unleashed · #56 Check the set symbol in the lower right of the illustration, and the copyright year along the bottom edge. Those two identify the print run on every card that has them. $1.73 <0.1% gem Unified Minds · #103 Check the set symbol in the lower right of the illustration, and the copyright year along the bottom edge. Those two identify the print run on every card that has them. $1.62 100% gem Legendary Collection · #84 Check the set symbol in the lower right of the illustration, and the copyright year along the bottom edge. Those two identify the print run on every card that has them. $1.57 33% gem Team Rocket Returns · #69 Check the set symbol in the lower right of the illustration, and the copyright year along the bottom edge. Those two identify the print run on every card that has them. $1.53 45% gem Unleashed · #57 Check the set symbol in the lower right of the illustration, and the copyright year along the bottom edge. Those two identify the print run on every card that has them. $1.53 <0.1% gem Rapid Strike Master · #039 Check the set symbol in the lower right of the illustration, and the copyright year along the bottom edge. Those two identify the print run on every card that has them. $1.45 100% gem Fusion Strike · #138 Check the set symbol in the lower right of the illustration, and the copyright year along the bottom edge. Those two identify the print run on every card that has them. $1.34 50% gem Evolutions · #61 Check the set symbol in the lower right of the illustration, and the copyright year along the bottom edge. Those two identify the print run on every card that has them. $1.24 11% gem Battle Styles · #068 Check the set symbol in the lower right of the illustration, and the copyright year along the bottom edge. Those two identify the print run on every card that has them. $1.19 40% gem Champion Road · #032 Check the set symbol in the lower right of the illustration, and the copyright year along the bottom edge. Those two identify the print run on every card that has them. $1.07 100% gem Pokemon GO · #036 Check the set symbol in the lower right of the illustration, and the copyright year along the bottom edge. Those two identify the print run on every card that has them. $1.05 40% gem Fusion Arts · #055 Check the set symbol in the lower right of the illustration, and the copyright year along the bottom edge. Those two identify the print run on every card that has them. $1.00 100% gem Stormfront · #69 Check the set symbol in the lower right of the illustration, and the copyright year along the bottom edge. Those two identify the print run on every card that has them. $0.99 13% gem Celestial Storm · #71 Check the set symbol in the lower right of the illustration, and the copyright year along the bottom edge. Those two identify the print run on every card that has them. $0.99 <0.1% gem Plasma Freeze · #61 Check the set symbol in the lower right of the illustration, and the copyright year along the bottom edge. Those two identify the print run on every card that has them. $0.84 <0.1% gem Miracle Twin · #043 Check the set symbol in the lower right of the illustration, and the copyright year along the bottom edge. Those two identify the print run on every card that has them. $0.72 no PSA data Space-Time Creation · #068 Check the set symbol in the lower right of the illustration, and the copyright year along the bottom edge. Those two identify the print run on every card that has them. — no PSA data

Prices are raw market value. Click a printing for its full grading verdict — the gem rate, the fees and whether it beats selling raw.