Duckworth 18 Advantage Sport vs Shoalwater Boats By Shoalwater 21 CAT: 5-year value retention (70% vs 70%), resale value, and cost of ownership head-to-head. Duckworth 18 Advantage Sport holds its value better.
On five-year value retention the Duckworth 18 Advantage Sport comes out ahead, holding about 70% of its value versus 70% for the Shoalwater Boats By Shoalwater 21 CAT. Over the first five years the Duckworth 18 Advantage Sport loses roughly $10,065 while the Shoalwater Boats By Shoalwater 21 CAT loses about $13,549 — a gap near $3,484.
First-year drop is the biggest factor: the Duckworth 18 Advantage Sport sheds about 10% in year one versus 9% for the Shoalwater Boats By Shoalwater 21 CAT. If you buy used, the steeper early drop is what the original owner absorbs.
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