I’ve been tracking a top competitor in my niche and found something interesting:

  • Normal daily price: $18.99

  • Recent 7-day Deal price: $18.98

  • Strikethrough reference price: $29.99

Their previous Lightning Deal was around $14.41, following the normal calculation:

$19.99 × 0.85 ≈ $16.99 → $16.99 × 0.85 ≈ $14.44, rounded to $14.41.

That deal ended about two months ago, and they’ve been priced at $18.99 ever since. Now they’re running a BD at almost the same price as their regular selling price.

I’m trying to understand how Amazon’s deal algorithm allows this. Has anyone else seen this in their category? How does Amazon determine the minimum allowed deal price here?