Whether you're shopping for boats personal watercraft, the biggest decision is scale: do you already have a hull that needs a motor, or do you need a complete boat? The options here range from a compact outboard motor to a 21-foot inboard ski boat, so the right answer depends on how you plan to use it. The price spread is wide, which means your budget has to line up with your intended use rather than any single feature.
Quick take
The 1985 Sunrunner is the lower-priced complete boat, while the 21' 1990 Supra Mariah is the larger boat in the group. If you need portable power, one of the two outboard motors is priced lower than the other.
Listed price comparison
| Product | Listed price | Price bar |
|---|---|---|
| 3.5HP 2 Stroke Gas Outboard Motor Manual Start For Dinghy Small Fishing Boat | USD 148.31 | |
| 3.5HP 2 Stroke Gas Outboard Motor Manual Start For Dinghy Small Fishing Boat | USD 157.77 | |
| 1985 Double Haul Sunrunner Boat | USD 4,000.00 | |
| 21' 1990 Supra Mariah Boat | USD 8,000.00 |
Decision matrix
| If your priority is... | Product to consider | Why it works | Keep in mind |
|---|---|---|---|
| Small gas power for a dinghy or fishing boat | The lower-priced outboard | Shares core specs with the higher-priced motor | Compact output for a small hull |
| A complete boat package | The 1985 Sunrunner | Complete package with the boat and cover | 1985 model, sold as used |
| A larger inboard boat | The 21' 1990 Supra Mariah | Composite hull and inboard engine | Higher price and used condition |
| Same outboard title at a higher price | The higher-priced outboard | Same title and technical specs | Higher price for the same title |
Product notes
3.5HP 2 Stroke Gas Outboard Motor Manual Start For Dinghy Small Fishing Boat - USD 148.31

The starter kit makes this a practical pick for a small boat. It is a new, manual-start 2-stroke outboard with CDI ignition, a 35:1 fuel-to-oil ratio, and a 27/13 gear ratio. Full throttle operation is in the 4000-5000 rpm range. The bundled water pump impeller, starter, funnel, fuel mixing bottle, and English instructions mean you have the essentials in one package. Its 13kg gross weight gives you a concrete sense of how portable it is. This is the lowest-priced outboard in the set, so it makes sense if a compact motor for a dinghy or small fishing boat is the goal. The manual-start requirement and 3.5HP output are the two clear constraints.
3.5HP 2 Stroke Gas Outboard Motor Manual Start For Dinghy Small Fishing Boat - USD 157.77

The identical product title covers the same 2-stroke, CDI ignition, manual-start design, and the same 35:1 fuel-to-oil ratio, 27/13 gear ratio, and full-throttle range. It is also new and aimed at dinghies and small fishing boats. At $157.77, it costs more than the same-named motor at $148.31, yet the specifications match. If you have a preference for this version, the higher investment buys you the same core outboard. For most shoppers, the lower-priced motor delivers the same functional result without the extra $9.46.
1985 Double Haul Sunrunner Boat - USD 4,000.00

The 1985 Sunrunner is the more affordable complete boat in the group. It is a used fiberglass bowrider with Washington state bow numbers, a canvas bimini/cockpit cover, and a single-axle roller trailer that includes a spare tire mounted on the tongue. Because the trailer is part of the package, you can move the boat without hunting for a separate tow setup. The motor is a large white Evinrude or Johnson unit. If a ready-to-tow classic is what you want, this is the one to weigh. The limitations are the 1985 model year and the used condition, both of which point to an older boat rather than a recent hull.
21' 1990 Supra Mariah Boat - USD 8,000.00

The 21' 1990 Supra Mariah is the only inboard boat in the group. It also has a composite hull and an 11-20 gallon fuel capacity, and it is a ski boat for fresh water use. The boat has been under one ownership and stored indoors, with new gelcoat, a new rubber rail, and upholstery and carpet in good condition. For a larger inboard layout with a dedicated ski-boat purpose, this is the model to compare. The tradeoff is a price that climbs well above the Sunrunner, and the 1990 model year means it is still a pre-owned boat.
Final recommendation by use case
Summing up by use case: if you need a small outboard, the lower-priced motor is the one to start with. If you want a complete boat with a trailer and a lower listed price, the 1985 Sunrunner should be on your short list. If you need inboard power, more length, and a ski-boat layout, the 21' 1990 Supra Mariah is the inboard choice that fits that role.