You might get into a Fixed Head for under 10k, but for a roadster, you would have to be very very lucky to get one ionder 10k, and then it would probably be in very very rough shape. You would be better off spending a bit more and getting one that at least didn't have major rust-out and need major engine/gearbox work. Just for kicks, I scanned in a few ads I saw in Hemmings and converted (my scanner can convert text). Here are the 140 roadsters currently for sale there (there were two others, but they were $45; and $55k respectively. This might give you a better, more realistic idea:
(I CAN NOT VOUCH FOR ANY OF THESE OR THE PEOPLE SELLING THEM ... JUST PASSING ON THE INFO)
From HMN:
JAGUAR: 1955 XK 140 roadster, matching #8, early car, disc wheels, runs & drives, older repaint, solid chassis and body, $23,500. PH: 972-458-2004, TX;
https://www.petesclassiccars.com
JAGUAR: 1955 XK 140 roadster, 2 Owner, 41,000 ml. classic black/red, striking, well-preserved car. 303-668-4555, CO,
https://www.classicinvest.com
JAGUAR: 1956 XK 140 roadster, white/red, chrome wires, $39,500. PH: 847-247-0447. IL;
https://www.northshoresportscars.com
JAGUAR: 1956 XK 140 roadster, red with red interior, very original car, sitting in storage for last 10 yrs, needs minor restoration, $17,500. Gullwing Motor Cars, Inc. 718-545-0500
https://www.gullwingmotorcars.com
JAGUAR: 1956 XK I40MC roadster, exquisite restoration, red with black interior, sandcast carburetor, factory overdrive, simply magnificent, $47,500. Hyman Ltd. 314-524-6000. MO;
https://www.hymanltd.com
JAGUAR: 1957 XK 140 roadster, currently under frame-off restoration, standard 3-1/2 litre engine, rare disc-wheel skirt model new parts include: tires, interior (biscuit), chrome work, bumpers, overriders, grille, side posts, also new sheetmetal, exhaust system, includes side curtains, jack, ratchet, needs professional restoration, title, matching numbers. Chuck Pilate, 810-530-8561, MI (Notice, no price mentioned)
George
[This message has been edited by Wingtip (edited 11-02-2001).]