Yes, St. Barts (Saint Barthélemy) is significantly more expensive than St. Martin in 2026. St. Barts is a boutique, ultra-luxury island known for its high-end villas, Michelin-star dining, and celebrity clientele; it essentially has no "budget" options. You can expect to pay double or triple for food, drinks, and lodging compared to the mainland. A supportive peer "value" comparison: St. Martin (the French/Dutch island) is much larger and offers a massive range of price points, from affordable all-inclusive resorts and "lolos" (local BBQ stands) to luxury stays in Terres Basses. In 2026, a "cheap" meal in St. Barts might cost $40, while a similar meal in St. Martin could be $15. If you want the "jet-set" vibe and exclusive privacy, St. Barts is the choice; if you want diverse beaches, nightlife, and a more accessible Caribbean experience, St. Martin is the much better financial bet.