There you will find fruit as it should be. It is often less then pretty. The berries varie in size, the melons are craggy, homely, and less than perfect spheres, the citrus fruits are dull to the eye and hard to the touch. This is as it should be. Take in the smells.
Ripe fruit smells like, well, ripe fruit.
Enjoy the tastes. The vendors at such places will generous sample their wares to customers, hoping to get them to try new and different varieties. Learn from these people. Ask them how to choose fruit. The information is priceless.