Did I sell any books? Nope. Not one. Zero. Nada. Zaden.
Am I going to quit writing? No. I've gone through this scenario many times, though when I was younger, disappointment hit me harder. I needed extra money when the kids were younger, but writing didn't provide it. So I got a job. Still, I could not quit writing. I had stories to tell. In the quiet of the evening, when the house settled down, I wrote.
Some people live to play golf, some live to sing, some live to shop. I live to write.
And though I did not sell any books at the book fair, my books do sell online.
As far as the gas for the car, I had money in my wallet to buy it on the way home. (I always remember to be prepared.) There was a gas station on Route 1 selling regular for $3.05 a gallon. What a bargain! Plus the proprietor actually cleaned the front AND back windows for me.
It was my lucky day. :-)