author · editor

Jackie Chung

TCG Market Analyst

Jackie Chung covers the Pokémon TCG secondary market for PokéQuant, with a focus on grading economics and set value guides. She spends most of her research time in population reports and grade-spread data, tracing how submission volume, print runs, and grading-company standards shape the premium between a raw card and its graded counterparts across different eras. Her set guides are built the same way: grounded in published pricing and pop data first, with market narrative kept separate from the numbers behind it.

Jackie Chung's articles describe market history and mechanics using published population and pricing data. They are informational and are not personalized investment advice.

Articles by Jackie Chung

Price Guides

151 Card Values: The Complete Guide

Pokemon TCG: 151 concentrates almost all of its value in 42 secret cards. This guide prices every rarity tier from TCGplayer market data read on September 1, 2026, ranks the ten chase cards, and shows why print rarity does not set the order.

5 min read

Market Analysis

Absorption and Depth: What Happens When You Sell Into a Thin Market

Depth measures how many listings sit near a card's best price, and absorption measures how much of that depth a specific trade actually uses. Delivered price, item plus shipping, decides which listing is really cheapest, and an auction result should never be read as a fixed-price floor.

6 min read

Grading

Gem Mint 10 Odds by Set: Which Sets Grade the Hardest

Gem mint 10 rates are not one hobby-wide number: PSA's Population Report puts Neo Genesis at roughly 3.2 percent PSA 10 and 2021's Evolving Skies near 59.2 percent, an eighteen-fold spread inside the same grading company's own data. PSA publishes the counts behind each rate but no cause for the gap. Even within a single set, one chase card can grade far harder than the set's own average.

5 min read