Marshall Sandpiper Open CB vs Shoalwater Boats By Shoalwater 20 CAT: 5-year value retention (70% vs 70%), resale value, and cost of ownership head-to-head. Marshall Sandpiper Open CB holds its value better.
On five-year value retention the Marshall Sandpiper Open CB comes out ahead, holding about 70% of its value versus 70% for the Shoalwater Boats By Shoalwater 20 CAT. Over the first five years the Marshall Sandpiper Open CB loses roughly $7,301 while the Shoalwater Boats By Shoalwater 20 CAT loses about $12,831 — a gap near $5,530.
First-year drop is the biggest factor: the Marshall Sandpiper Open CB sheds about 6% in year one versus 10% for the Shoalwater Boats By Shoalwater 20 CAT. If you buy used, the steeper early drop is what the original owner absorbs.
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