Airstream 28RB Twin vs Harmar 7210GN: 5-year value retention (77% vs 77%), resale value, and cost of ownership head-to-head. Harmar 7210GN holds its value better.
On five-year value retention the Harmar 7210GN comes out ahead, holding about 77% of its value versus 77% for the Airstream 28RB Twin. Over the first five years the Harmar 7210GN loses roughly $11,051 while the Airstream 28RB Twin loses about $31,763 — a gap near $20,712.
First-year drop is the biggest factor: the Harmar 7210GN sheds about 22% in year one versus 10% for the Airstream 28RB Twin. If you buy used, the steeper early drop is what the original owner absorbs.
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