Need a price check

General
1

I am in talks with a seller on a 1st edition stamp Ivy Pikachu promo 1 with a PSA 9 grade. Does anyone know the average price in which these run as I can’t find any information on them. Thanks!

2

www.psacard.com/auctionprices/tcg-cards/pokemon-jungle-promo/pikachu-1st-edition-black-star/values/526629

3

Thank you so much!