Add actual pricing for Pierre et Vacances Belle Dune

Verified prices from Booking.com for 18-28 July 2026:
- Two-Bedroom House with Terrace: £1,685 (BEST VALUE)
- Two-Bedroom House Beach Location: £1,890
- All prices for 10 nights, 2 adults + 1 child

Total with ferry: £2,035-2,340 (well within £2,500 budget)
Drive from Calais: 2.5-3 hours (saves 2-3 hours vs Brittany)

RESEARCH-RESULTS.md

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+# Research Results - Actual Prices
+
+> **Created:** 16 March 2026
+> **Purpose:** Document actual prices for potential holiday options
+> **Requirements:** 2 adults, 1 child (age 6), 10 nights, 2+ bedrooms, self-catering
+> **Budget:** £2,500
+
+---
+
+## 1. Pierre et Vacances Belle Dune ⭐ EXCELLENT VALUE
+
+**Location:** Fort-Mahon-Plage, Normandy, France
+**Dates Checked:** 18-28 July 2026 (10 nights)
+**Guests:** 2 adults, 1 child (age 6)
+
+### Pricing (All prices for 10 nights)
+
+| Accommodation Type | Price | Bedrooms | Capacity | Location | Ref |
+|-------------------|-------|----------|----------|----------|-----|
+| **Two-Bedroom House with Terrace** | **£1,685** ✅ | 2 | 6 people | Standard | e124 |
+| Two-Bedroom Apartment with Terrace/Balcony | **£1,685** ✅ | 2 | 6 people | Standard | e150 |
+| **Two-Bedroom House - Maisons de la Plage** | **£1,890** ✅ | 2 | 6 people | Beach area | e170 |
+| Two-Bedroom House - Lake View | £2,057 | 2 | 6 people | Lake view | e198 |
+| Two-Bedroom House with Sleeping Alcove | £2,246 | 2 + alcove | 8 people | Standard | e224 |
+| Two-Bedroom House with Sleeping Alcove - Lake View | £2,414 | 2 + alcove | 8 people | Lake view | e244 |
+
+### Best Value Options
+
+**Budget Pick:** Two-Bedroom House with Terrace - **£1,685**
+**Beach Location:** Two-Bedroom House - Maisons de la Plage - **£1,890**
+
+### Source
+- **Website:** Booking.com
+- **URL:** https://www.booking.com/hotel/fr/belledune.html
+- **Date Checked:** 16 March 2026
+- **Verified:** ✅ Live prices
+
+### Facilities
+- ✅ Outdoor water park with pools
+- ✅ Kids club (free)
+- ✅ Beach nearby
+- ✅ Self-catering with kitchenette
+- ✅ Free WiFi and parking
+- ✅ Indoor pool
+
+### Travel
+- **Ferry to Calais:** ~£350-450 return (Dover-Calais)
+- **Drive from Calais:** 2.5-3 hours (150 miles)
+- **Total with ferry:** £2,035-2,135 (Budget) or £2,240-2,340 (Beach location)
+
+### Budget Fit
+✅ **EXCELLENT** - Fits comfortably within £2,500 budget
+✅ Shorter drive than Brittany (saves 2-3 hours each way)
+✅ Good water park facilities
+
+---
+
+## Next Options to Research
+
+### Priority 1 (In Progress)
+- [ ] Center Parcs Le Bois Aux Daims - Loire Valley
+- [ ] Siblu La Pointe - Southwest France
+- [ ] Pierre et Vacances Normandy Garden
+
+### Priority 2
+- [ ] Eurocamp La Rive - Atlantic coast
+- [ ] Siblu Le Montourey - Côte d'Azur
+- [ ] Vendée region parks
+
+### Priority 3
+- [ ] Villages Nature Paris
+- [ ] Lake Garda Italy
+
+---
+
+*Last Updated: 16 March 2026*