The modern version of the three wheel automobile has taken a decidedly sporty approach (with the exception of the Elio...which will probably never actually be sold in any decent quantity) with things like the Slingshot and the Campagna T-Rex...but it wasn't always this way. There was a time when a three wheeler was just a single performance step above a bicycle. Find this 1967 Sports Rider by Kelsen Manufacturing offered for $2,000 in Petaluma, CA via craigslist. Tip from Rock On!
The Reliant Robin was introduced in 1973 to a surprised and skeptical public, but the 70 miles per gallon fuel economy and affordable asking price were enough to sway a few folks who were not put off by a lack of sway bar. Find this 1980 Reliant Robin offered for $2,500 in Downingtown, PA via craigslist. Tip from Steven.
Find this 1978 Litestar Pulse 3-Wheeler here on eBay bidding for $9,600 reserve-not-met located in Shingle Springs, CA with 3 days to go.
The allure of 3-wheeled hoonage bursts from the skin of any Morgan Cyclecar like a fresh Botox bruise on the face of a Beverly Hills housewife. Sure, they might be getting up there in age and not able to keep up with the latest models, but fun is just a curve away if you can tame the wild beast. Unfortunately the cost of ownership of the real deal can be prohibitive, so getting a replica might do the trick. Find this undisclosed model year Morgan Cyclecar Replica offered for $3,000 in Elizabeth, CO via craigslist. Tip from Zach Z.
This has to be the most expensive 3-wheeler in the world -- find this 2016 Vanderhall Laguna (sold from VanderhallUSA -- eBay sales (0) here on eBay offered for $77,000 buy-it-now located in Provo, UT.
This next tip comes from Slowboy who calls it a Weird friggin trike thing and writes; Doesn't look complete, but uh... I dunno. The ad doesn't have a lot of info, and the pictures suck. Have a link. Don't mind if I do. Find this 1995 Yamaha Trike offered for $5,000 in Dayton, OH via craigslist.
This next car comes from tipper Andy L, who included a fantastic list of the top ten reasons to buy this 
offered for $3,000 buy-it-now located in Dubuque, IA with less then one day to go. Take it away Andy!
For awhile, it seemed that Morgan's position on the modernity spectrum could only go one way: the wrong way. Then they unveiled the brazenly steampunk 3-Wheeler. Lauded for its stalwart mechanical charm, it unfortunately cost about as much as a Caterham with options. But at 1/4 of the price, this well-built replica is ready for a new dapper gent stuck on a forgotten vehicular formula. And it's here to replace your penny-farthing for your weekly haberdashery visit. Find this Morgan 3-Wheeler replica for sale in Newbury Park, CA for $10,000 via craigslist. Tip from Sean S.