A decision framework based on 200+ tracked competitor moves.
We tracked 217 deliberate price drops by mid-sized eBay sellers over 9 months. Of those, 184 (85%) triggered a competitor response within 48 hours. Of those 184, only 12 ended with the initiator's market share higher than where they started.
85%
Drops that triggered war
6.5%
Drops that won share
−14%
Avg. margin loss to all parties
When NOT to start a price war
Red flag conditions
- Your competitor has a clear cost advantage (overseas direct sourcing)
- Your margin is already below 18%
- The category has 5+ active sellers (you can't outlast all of them)
- Your inventory turn is slower than 6x/year
When you CAN start a price war
Green light conditions
- 1–2 active competitors only
- Your cost basis is at least 12% below theirs
- You can absorb 60+ days of compressed margin
- You have a bundle/SKU pivot ready as exit
"If you can't name your exit before you fire the first shot, don't fire."
