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Discount Stack

Stack a store discount, coupons, marketplace tiers and a subsidy to see what the buyer pays and the seller keeps

Share of the list price the buyer pays — 85 means 15% off

Shop coupon
SpendOff
Marketplace tiers
SpendOff
Buyer pays
¥236.65
79.1% of list price
  1. Store discount−¥29.90¥269.10
  2. Shop coupon−¥20.00¥249.10
  3. Marketplace tiersThreshold not met¥249.10
  4. Platform subsidy−¥12.46¥236.65
Seller receives
¥249.10
Profit after cost
¥129.10 · 51.8%
Total discount ¥62.35

The order matches checkout: store discount → shop coupon → marketplace tiers → subsidy. A tier threshold is checked against the amount before it applies, and with repeat on, every full threshold counts. The platform funds the subsidy, so it is added back to what the seller receives. Real rules differ by category and campaign (exclusions, cross-store baskets, coupon returns), so treat this as the floor price.