Here are some resources for tracking Curio Cards market data
The Curio Cards Supply, Ownership & Price google sheet by community member ezrawithacamera.eth has a ton of information on recent sales, zombie wallets, wrapped percentages, card market cap, rarity adjusted prices, etc. It's a must-see resource for anyone curious about the curio market.
The community gallery has an extra page that aggregates recent sales data from OpenSea to show the current value of a Full Set, or the USD value to buy or sell 1 of every Curio Card
Curio Cards Sentiment Survey (November 2021)
The Curio Cards Discord server has a channel dedicated to market data discussion called #market-discussion