This was a fun exercise. I went to Auto Trader and got several results, and these caught my eye:
$15,000 — 2013 BMW 328i Convertible, 94,537 miles
$16,500 — 2010 Jeep Wrangler Unlimited Sport, 118,300 miles
$18,918 — 2016 Ford Mustang Premium convertible, 65,679 miles
$18,455 — 2016 Chevrolet Camaro LT with the RS Package, 74,426 miles
$18,000 — 2014 Dodge Challenger SXT, 51,090 miles
$17,999 — 2010 MAZDA MX-5 Miata Grand Touring, Premium Pkg, 21,525 miles
$17,998 — 2016 BMW 428i, 82,907 miles
$18,995 — 2017 BMW 230i Coupe, 52,505 miles
$12,850 — 2006 Porsche Boxster, 145,125 miles
There are some nice selections here. I then selected for a manual transmission and these were among the many available:
Manual transmission
$18,455 — 2016 Chevrolet Camaro LT with RS Pkg, 74,426 miles
$19,955 — 2016 MAZDA MX-5 Miata Club, 57,282 miles
$18,989 — 2014 Dodge Challenger R/T, 79,455 miles
$10,900 — 2006 Nissan 350Z Touring, 91,314 miles
$18,993 — 2017 Ford Mustang Coupe, 52,399 miles
$17,999 — 2014 Jeep Wrangler Unlimited Sport, 112,885 miles
$12,850 — 2006 Porsche Boxster, 145,125 miles
$19,590 — 2017 FIAT 124 Spider Classica, 26,550 miles
Among all of these, it’s difficult to choose! But in the end my choice would be (drumroll please):
$12,850 — 2006 Porsche Boxster, 145,125 miles
Thank you, Genie! NSFW — https://pbs.twimg.com/media/FiOg9PXXgAIpLLx.jpg