I had a male Basenji that peed like a horse until the day he died at 15 and a half. No matter where he was. And it was kinda nice having a male that wouldn't hike his leg to piss all over things, never marked anything either. Don't complain if your boy doesn't hike to pee.
On the other hand, I had 2 Siberian Husky bitches who were TERRIBLE markers, always tried to get it as high as they could. They were both spayed too. One passed away a few years ago, still have the other, and she never marks anymore.
There is another Basenji on CL who is also from a GA breeder: https://louisville.craigslist.org/pet/d/purebred-basenji-pup/6625622891.html The owner is asking $400, sez he paid $800. BRAT knows about both dogs, but they won't pay a large fee.
Craigslist is NOT the place to buy a puppy. There is a probable scam happening on Craigslist right now regarding the sale of Basenji puppies. It is going on across the country, some ads have been removed, but new ones go up; currently there are ads in CA, CO, NM, OH, and FL. All ads have various titles, pictures, and reply-to email address, yet every reply I've gotten back is from: Suzan Lake <firstname.lastname@example.org and she sends the same group of 15 pictures.
She is giving away the pups, but she wants you to send $$ for airflight for them from Philadelphia. I smell scam, and there can't possibly be that number of litters available right now!