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South Bay 521RS keeps an estimated 59% of its value after 5 years — #4817 of 5780 boats VINdown tracks. See the full curve and the best year to buy.
Per VINdown's modeling, the South Bay 521RS retains an estimated 59% of its value after five years, ranking #4817 of 5780 boats we track. That trails the 62% five-year average for Pontoon in its class by 3 points, so it depreciates faster than most rivals.
Most of the loss lands early: the South Bay 521RS sheds about 8% of its value in year one alone. From roughly $36,746 it falls to around $26,134 by year five — a five-year loss near $10,612, about $5.81 a day in depreciation.
Because the steepest drop hits around year 3, a lightly-used South Bay 521RS bought at 3 years old lets the first owner absorb the worst of the depreciation while the curve flattens — usually the value sweet spot. Explore the full year-by-year curve, trims, and true cost of ownership in the Model Lab above.
It keeps an estimated 59% of its value after five years — worse than most among the 5780 boats VINdown tracks (ranked #4817).
From about $36,746 when new it drops to roughly $26,134 after five years — a loss near $10,612 (59% of its value retained).
Around 3 years old: that is just past the steepest depreciation, so you skip the biggest drop while the value curve is flattening.