Where to look for accurate current card sales information.

Dgilbert

Where are some places to look for current sales, of graded trading cards.
More specifically card value on the current market for series 1. 1990 impel marvel universe cards,
but any suggestions are appreciated.
Thanks in advance.

jfkheat

Completed sales on eBay

RufussCkingston

https://www.psacard.com/auctionprices