Which Nidorina do you have?

Same name, 6× the price: $1.19 to $7.06 raw. The difference is printed on the card — it is just not somewhere most people think to look.

Base Set 2 · #53 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. $1.92 34% gem Skyridge · #83 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. $7.06 41% gem Jungle 1st Edition · #40 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. $4.02 22% gem Fire Red Leaf Green · #40 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. $3.88 38% gem Dragon Frontiers · #34 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. $3.23 7% gem Pokémon Jungle · #030 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. $2.44 20% gem Plasma Freeze · #41 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. $2.29 100% gem Triumphant · #45 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. $2.23 <0.1% gem Legendary Collection · #55 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 43% gem Team Up · #55 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. $1.90 70% gem Mysterious Treasures · #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. $1.78 <0.1% gem Jungle · #40 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. $1.50 16% gem Primal Clash · #67 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. $1.50 <0.1% gem Pokemon Card 151 Japanese · #030 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. $1.49 67% gem Pokemon Card 151 · #030 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. $1.49 29% gem Rising Rivals · #73 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. $1.36 <0.1% gem Storm Emeralda · #042 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. $1.20 no PSA data Tag Bolt · #040 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. $1.19 100% gem Secret of the Lakes · #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. — 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.