Sounds like the seller is a dealer.

https://dallas.craigslist.org/dal/ctd/d/1942-ford-gpw-jeep/6683328119.html

“1942 Ford GPW Military Jeep. VIN 30319. Odometer reads 43,018 miles. 134ci 4 cylinder engine / 3 speed manual trans. Four Wheel Drive. The engine block is non-original. Engine runs fine. Dana 25 front differential, Dana 27 rear differential. Has been converted to 12 volt electrical system. Solid body. Will need some minor mechanical repair to be a driver. Great project.

Yes – WE TAKE TRADES. If you have a trade-in, please send photos of your trade, detailed information about your trade and the price you`re looking to get for your trade.
If you do not include this with your trade offer I will not respond.”

UPDATE: Price dropped to $4900.

(08/13/2018) Has a V-6.

https://sacramento.craigslist.org/cto/d/1945-gpw-jeep/6666309417.html

“This is a 1945 Jeep GPW. All in all in good shape. Has a 225 odd fire V6. I’ll stock drivetrain. New starter. New alternator, new ignition module, new tires. Everything works including all gauges lights brakes 4 x 4 etc…….. ready for hunting. Flat tires easily. I hate to sell it but I need to fund other projects. My loss your gain.$5,000. Have pink in hand and is a clear title.”

UPDATE: Price dropped to $3000.

(07/07/2018) Has a flathead six.

https://goldcountry.craigslist.org/cto/d/1942-ford-gpw-willys/6678329009.html

“I have a 1942 Ford GPW. I’ve owned it for around 18 years and it’s time for it to go. It has a flathead 6 cylinder that I’m told might be a studebaker. It ran about 2 years ago and I just topped driving it around because the brakes didn’t work. It’s currently non-op reg status with dmv. According to the data plates it was born on November 10th, 1942. Serial number 80041, which most likely puts it out of the ford plant in Richmond, Ca.”

Runs.

https://fortcollins.craigslist.org/cto/d/1942-ford-army-jeep/6680741146.html

“1942 Ford Arny Jeep. 5000.00 OBO
Good running condition”

Hasn’t been started in 10 years. It’s listed as a 1952, but looks to most likely a GPW with a CJ-2A grille and CJ hood.

https://anchorage.craigslist.org/atq/d/1952-willys-jeep/6678429764.html

“Jeep was parked in about 2009 when spouse got sick. Has not been moved or started since. It was my 20th wedding anniversary present. Time for me to move on.
Has clear title. $5,000.00 or best offer.”

Some better pics would be useful.

https://losangeles.craigslist.org/sfv/cto/d/1943-jeep/6677835534.html

“Here you have a 1943 Ford GPW. Very easy restoration finish have all the parts down to the axe and shovel. Including new military soft top and metal frame. 4 cylinder engine, military tires, and power steering (yes power steering). It is a strong running Jeep, drive anywhere.”

Jon shared this one. It has a few changes.

https://vancouver.craigslist.ca/van/cto/d/wwii-ford-jpw-for-sale/6662768841.html

“For sale is a WWII Ford GPW – 1943. Electrical harness replaced a couple years ago – asking $25000 – serious inquiries only please. No time wasters.”

Has the MB cross member up front. Either it’s an early GPW or it’s mix of parts.

https://westslope.craigslist.org/cto/d/1942-ford-jeep-willys/6672211505.html

“\Motivated to sell before winter.
VT Registration previously – No Title
Retrofitted back seat and seat belt for road use
Hasn’t been operated for at least 15 years

We hoped to work on it and have this as a fun town vehicle, but haven’t found the time. It’s been in the fam for about 30 years and I road in it as a kid. Very fun! I’d love to see it running again and someone enjoying it.”

Has updates.

https://sacramento.craigslist.org/cto/d/1942-ford-gpw-jeep-willys/6657323933.html

“1996 GM fuel injected 4.3v6. Rebuilt ford 4 speed T18 low granny, rebuilt dana 18 transfercase. Have receipts. 5.38 axles. A lot of work done on this jeep registered and pink slip on hand. Ready for off road or daily use. Serious buyers price is negotiable”