TCGplayer Direct & Margin Spread Engine

Deterministic net payout, TCGplayer Direct fee auditing, and envelope shipping margin calculator for single card sellers.

TCGplayer Direct & Margin Spread Engine is a high-speed, deterministic profit calculator and fee auditor built specifically for collectible card game (CCG/TCG) sellers, card shops, and arbitrage flippers across Pokémon, Magic: The Gathering (MTG), Yu-Gi-Oh!, Lorcana, and One Piece. Never miscalculate your margins on low-dollar singles or high-ticket graded slabs again. Audit exact platform take rates, envelope postage drag, and TCGplayer Direct replacement fees before you list. CORE FEATURES & CAPABILITIES • Dual Platform Engine: Seamlessly toggle between Standard Marketplace (PWE / Bubble Mailer) and TCGplayer Direct program fulfillment models. • Exact Fee Auditing: Factors in TCGplayer baseline 10.25% commission alongside payment processing (2.5% + $0.30 fixed fee) calculated against total gross order value. • Postage Drag Optimizer: Pre-configured shipping profiles for standard Plain White Envelope (PWE Stamp), Non-Machinable post, Tracked Bubble Mailers, and zero-postage Direct batch fulfillment. • Direct Replacement Drag Solver: Automatically models TCGplayer Direct handling fees and tiered card replacement cuts across micro-singles (<$3.00), mid-tier cards, and high-value staples. • Instant Break-Even Floor: Displays the minimum sale price required to avoid taking a loss on low-margin singles. • 1-Click Ledger Clipboard Export: Formats and copies a clean transaction breakdown to paste directly into your inventory sheets, Discord trade chats, or seller logs. BUILT FOR SPEED & SELLER PRIVACY • 100% Client-Side: Zero latency, zero external servers, and zero token lag. Runs entirely within your local browser sandbox. • Persistent Preferences: Automatically saves your last used cost basis, postage rates, and program modes locally via Chrome storage so you can audit dozens of cards in seconds. • Zero Tracking: No personal data collection, analytics tracking, or account logins required.