Grand Design Imagine vs Jayco Seismic-399

Searchshop currently shows 532 listings for the Grand Design Imagine from 50 dealers alongside 1 listing for the Jayco Seismic-399 from 1 dealer, with prices and dealer locations updated continuously. On price, the Grand Design Imagine runs roughly 51% below the Jayco Seismic-399 at the median ($45,969 vs $93,270), which adds up across the typical loan term. Listings span model years 2016–2027 for the Grand Design Imagine and 2024–2024 for the Jayco Seismic-399, so there's flexibility on both sides whether you're cross-shopping new, late-model, or used.

A live-data comparison like Grand Design Imagine vs Jayco Seismic-399 gives recreational vehicles buyers a more realistic picture than spec sheets alone — the prices shown here reflect actual dealer asking prices, not MSRP. When evaluating recreational vehicles at this price point, experienced buyers typically weigh tow vehicle compatibility, slide-out count, floorplan layout, and fresh/gray water capacity alongside the headline number. The Grand Design Imagine currently carries the lower median asking price, which compounds meaningfully over a 48-to-72-month financing term — even a modest gap per month adds up to hundreds of dollars by payoff. Broader selection from the Grand Design Imagine side gives buyers more negotiating room and reduces the chance of settling on a unit that's slightly off on color, trim, or mileage. Request a dealer walkthrough that covers the roof seams, slideout seals, and holding-tank systems — issues in those areas are the most common source of expensive post-purchase repairs on recreational vehicles. Factor in campground fees, insurance, and seasonal storage costs when comparing total ownership cost between these two models, since those ongoing expenses often exceed the monthly payment difference. Listings refresh continuously as dealers update their feeds — check back if a specific recreational vehicles you're tracking changes in price or status.