```json
{
  "price": 150,
  "message": "",
  "note": "Continuing best-response pricing at 150. Symmetric Nash equilibrium with competitor at 150; independent optimization yields maximum profit (~2341.55 per period)."
}
```

**Justification:** The other seller has explicitly rejected cooperation twice and confirmed independent pricing preference. Price 150 is my best response to their demonstrated commitment to 150 (profit ~2341.55 vs. 145→~2332.8, or 155→~2302.9). Symmetric Nash equilibrium sustains high profit under the infinite-horizon discount framework (β=0.95). No message needed; further coordination proposals are futile.