Ginger Zhe Jin University of Maryland & NBER
Baseball cards and the Internet
Ginger Zhe Jin University of Maryland & NBER
Based on Jin and Kato "Dividing Online and Offline" Review of Economic Studies July 2007. Jin and Kato "Price, Quality and Reputation" RAND Journal of Economics, Winter 2006.
1989 Upper Deck Ken Griffey Jr.
? Card printing: once-for-all, limited quantity ? New cards: sold in sealed packs ? Used cards:
? sold in singles ? conditional on card type, the value of the
card depends on card condition (center, edge, corner, surface) ? professional grading at a fixed cost ? Used cards are traded in two markets: - retail stores or local card shows - online ? ebay
? Tradeoff between online and offline
? Online market offers search cost savings ? It is more difficult to observe the quality of
ungraded cards on the Internet
? What happens when the Internet came?
? How do people trade on the Internet? ? How do buyers and sellers adapt to the new
market? ? How does the Internet reshape the traditional
retail market, card grading and card printing?
Theory implies ....
? Market segmentation
Ungraded online
Ungraded Retail
Graded online
? Professional grading
card quality
? Demand for grading increases after eBay took off
? Quality distribution of the graded population shifts left
? Retail shrinkage?
Our approach
? eBay market watch / Beckett price guide ? Field experiment
? Buy the same cards from online and offline ? Have them professionally graded
? Study changes in the graded population
? Grading volume ? Grade distribution
? Survey every retail store listed in yahoo
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