The value of a Pokemon card is determined by several factors, including:
* Rarity: Some cards are printed in smaller quantities than others, making them more rare and valuable.
* Condition: Cards in excellent condition with no creases, scratches, or other damage are worth more than those in poor condition.
* Popularity: Cards featuring popular Pokemon or from popular sets tend to be more valuable.
* Age: Older cards are generally more valuable than newer cards.
* Demand: If a card is in high demand, its price will increase.
To find the value of your specific rare Pokemon card, you can:
* Use online price guides: Websites like TCGPlayer, Troll and Toad, and Pokemon TCG Online offer price guides for Pokemon cards.
* Check online marketplaces: eBay and other online marketplaces allow you to see what similar cards are selling for.
* Consult with a reputable card dealer: A card dealer can provide you with an accurate assessment of your card's value.
Please tell me the specific Pokemon card you're interested in, and I may be able to help you find its value.