No need to buy vegetable wash. Here are two things that work well for me:
4-5 drops Grapefruit Seed Extract (NOT GRAPE seed) in a large bowl of water to soak grapes, cherries, or other fruits & vegetables. Then rinse & dry.
You can make that into a spray for apples or other fruit
OR Try this for a vegetable wash:
1 c water
1 c white vinegar
1 T Baking Soda