Browse Top Boston Red Sox 2021 Baseball Sports Cards to Collect

The Sports Card App Quickly Targets Underpriced Card Deals Using Real-Time List Rankings & Analysis.

BTC Star Buy Rating: The BTC star rating algorithm considers multiple criteria including price percent change (compared to the average price of the overall list), average dollars per bid, bid rating score, and power ranking numbers. BTC Star Rated cards are prospective buy opportunities.

Sports Card Analysis: The higher the Bid Rating (BR) or List Ranking (LR) number - the hotter the card is or more valuable.

Bid Rating Number: The Bid Rating (BR) score system measures bid count behavior activity for an item and analyzes it against all other auction items listed. Simply speaking any BTC Bid Rating above 1.0 illustrates robust or better than average bidding activity.

Active Bid Icon: Active user bidding with above average bid engagement. The higher the bid rating the hotter the card.

Power Ranking Number: The Power Ranking (PR) rating system analyzes each card (or card product) against the queried list’s average cost per card. A Power Ranking (PR) number is assigned to each card. The higher the number the more valuable the card.

Digest Summary Information: Seven day price and bid trend info and charts. View pricing, average price, total listings, bid counts, bid averages, and average dollars per bid info.

24 Hours Icon: Listing ends in less than 24 hours.

*Desktop or Laptop PC Version Only

A Few Ways to Have Success Using the Price Guide Analysis

STUDY WEEKLY TRENDS

Examine our up-to-the-second real-time dashboard to see long and short-term price trends for the sports cards you're buying or selling.

VIEW MARKET DEMAND

Get a gauge on live market demand. Review our "Card Market Demand And Pricing Summary" digest to easily view various market buying conditions.

BUY WITH CONFIDENCE

Worried about overpaying? Research search rankings and use our target buy rating to find underpriced cards and invest in the best buys.