The Sonex market this morning
What does a used Sonex ask right now?
With 20 for sale this morning, the Sonex Sonex is the 13th most-listed piston type on Barnstormers. 8 were listed in the last 30 days and 6 came down, about the same churn as the rest of the class. TX has the most of them (3), then CA (2).
Asking prices run from $6,500 to $40,000, and half of the 18 priced listings sit between $15,000 and $27,750. The median is $25,000, 79% below the experimental and kit median of $119,500. Age matters: 2000s airframes ask a median of $37,500 against $11,750 for the 2010s.
7 sellers cut price in the last 30 days, 35% of the live fleet against 27% across every type we track; the average cut took 15% off the ask. Of the Sonexs we watched appear, 50% were still for sale 14 days later.
Set against every other type, the Sonex also appears in our note on which models get their price cut most often, with the sample behind each figure.
Written from this morning's figures and how they compare with the other types on the site. It changes as the market does.
Asking price distribution
Asking prices as typed by the seller. "Call" and "make offer" are counted as unpriced.
Median asking by decade
| Built | Seen | Median ask | Cut rate |
|---|---|---|---|
| 2000s | 3 | $37,500 | 0% |
| 2010s | 6 | $11,750 | 0% |
Year is read from the seller's title, so 77% of Sonex listings don't have one. They count everywhere else on this page but not in this table.
Be first to the next Sonex that lists or drops
One Telegram message the morning a Sonex appears in your budget, and another the day a seller cuts, with days listed and where the ask sits against these 20. Free during beta.
Buyer's notes
About the Sonex Sonex
What it is
The Sonex is a small, all-aluminum, side-by-side two-seat homebuilt from a Wisconsin kit maker, first flown in the late 1990s and sold as plans or a kit ever since. It uses pulled rivets and bent-sheet construction, and it can be finished as a taildragger or a tricycle. The design goal was speed on very little horsepower. Most fly behind an AeroVee, a Volkswagen-derived engine of about 80 hp, or a Jabiru 3300 of about 120 hp, and later kits accept the Rotax 912 and UL Power engines. Cruise on 80 hp is well above what a Cessna 150 does on more fuel.
The family has grown around the same fuselage. The Waiex is the Sonex with a Y-tail. The Onex is a single-seater with folding wings that fits in a one-car garage. The Xenos is a motorglider version with a long span and a glide ratio you can soar on. Owners describe them as light on the controls, quick in roll and a little twitchy in pitch until you get used to it, with a cockpit that is snug for two large people.
Variants that matter for price
Sellers write Sonex, Sonex-B, Waiex, Waiex-B, Onex or Xenos. The B models, introduced in the mid 2010s, widened the cabin, enlarged the baggage area and the fuel tank, and changed the panel and gear; a B asks more than a legacy airframe in the same condition. Engine choice is the next lever. An AeroVee is cheap to run but the least powerful and the most builder-dependent. A Jabiru 3300 gives the airplane real climb, and a Rotax 912 in a B model is the combination newer buyers want. A build finished to light-sport limits is worth noting, since it opens the airplane to sport pilots.
What buyers check
The engine is where most of the risk sits. On an AeroVee, ask who assembled it, how the cooling baffles were done, and what the cylinder head temperatures look like on a climb; badly cooled VW conversions run hot and eat valves. On a Jabiru, check the through-bolt and valve-train history and whether the factory bulletins were done. On the airframe, look for cracked or smoking pulled rivets around the gear attach, at the spar and along the tail. Sonex gear legs are sprung aluminum and they scar on hard landings, so inspect the legs and the attach points. Ask for the builder's log and photos, a completed Phase I, and a weight-and-balance that matches the airplane.
Who it suits
The Sonex fits a pilot who wants a fast, cheap, fun airplane for local flying and short trips, with one passenger who packs light. It is not a family or IFR airplane, and a taildragger Sonex in a crosswind is not a beginner's airplane. The Onex is the answer for a solo pilot with no hangar. Buyers cross-shop the Sonex against a Van's RV-12, a Zenith CH 601 or 650, and a Thatcher CX4 on the single-seat side.
How much does a used Sonex Sonex cost?
Asking prices on Barnstormers this morning run from $6,500 to $40,000, and the median is $25,000. The middle half of the 18 priced listings sit between $15,000 and $27,750. These are asking prices, not sale prices.
How many Sonex Sonexs are for sale right now?
20 on Barnstormers as of Oct 18, 2026. 8 were listed in the last 30 days and 6 came down. PlaneSnipe has tracked 44 since Jul 19, 2026.
How long does a Sonex Sonex take to sell?
50% of the Sonex listings we watched appear are still for sale 14 days later, so most take longer than that. We will publish a median once more than half of the cohort has closed.
How often do Sonex Sonex sellers cut the price?
7 price cuts in the last 30 days against 20 live listings, averaging 15% off the previous ask. Cuts are logged when the asking price drops between two consecutive mornings.
Last 30 days
Which Sonex sellers cut their price in the last 30 days?
| Aircraft | Where | Listed | Asking |
|---|---|---|---|
| Sonex B Kit 2025Oct 14 | RI | 61 d | $7,900$6,500−18% |
| SonexOct 13 | NC | 13 d | $28,000$26,000−7% |
| Sonex Legacy ProjectOct 8 | AZ | 91 d | $18,000$16,000−11% |
| Sonex Legacy Taildragger KitOct 8 | CA | 16 d | $8,999$7,999−11% |
| Sonex LegacyOct 4 | FL | 31 d | $25,000$15,000−40% |
| Sonex Legacy ProjectSep 23 | AZ | 91 d | $19,500$18,000−8% |
| SonexSep 19 | NY | 91 d | $25,000$22,500−10% |
For sale now
Which Sonexs are for sale right now?
Newest first. Days listed is counted from the morning we first saw the ad; listings that predate Jul 19, 2026 show the day we started watching.
| Aircraft | Where | Listed | Cuts | Asking |
|---|---|---|---|---|
| New 2026 Legacy Sonex | MI | 1 d | – | $38,000 |
| Complete Sonex Waiex B Kit | TX | 9 d | – | $13,900 |
| Sonex Waiex For Sale | NE | 9 d | – | $28,900 |
| Sonex | NC | 13 d | 1 | $26,000 |
| Sonex Legacy Taildragger Kit | CA | 16 d | 1 | $7,999 |
| 2007 Sonex A With Gen 4 3300 | GA | 17 d | – | $40,000 |
| 2010 Sonex Tri Gear Aerovee | TX | 18 d | – | $15,000 |
| 2014 Sonex A Model Kit | OK | 22 d | – | $6,900 |
| Sonex Onex Complete | TX | 30 d | – | $25,000 |
| Sonex-b Tail Kit Project | OH | 40 d | – | $1,000 |
| Sonex Highwing Tail Kit | FL | 44 d | – | see ad |
| Sonex Legacy | MA | 54 d | – | $25,000 |
| Sonex B Kit 2025 | RI | 61 d | 1 | $6,500 |
| 2009 Sonex - Jaibru 3300 | ME | 87 d | – | $37,500 |
| Sonex Legacy Project | AZ | 91 d | 3 | $16,000 |
| Sonex Legacy Td Aerovee | WI | 91 d | – | $20,000 |
| This Is Not The Sonex | FL | 91 d | – | $27,750 |
| Sonex | NY | 91 d | 1 | $22,500 |
| Sonex Legacy For Sale | — | 91 d | – | $27,500 |
| Sonex Legacy | CA | 91 d | 1 | $32,500 |
Cross-shop
What else does a Sonex buyer look at?
Other Sonex types with a page here, then the same class at a similar asking price.
Geography and method
Where are the Sonexs, and how are they counted?
Where they are
How we count
Barnstormers piston categories are read once a day. A listing is "delisted" after it is missing on two consecutive mornings. Days listed starts the morning we first saw the ad, so listings that predate Jul 19, 2026 are excluded from time-on-market figures. Prices are asking prices as typed by the seller. Nothing here is an appraisal. Full methodology.