The Environmental Working Group has put together a list of fruits and vegetables with the least and most amount of pesticides. This is one way to save money. Try to buy the Dirty dozen ORGANIC when possible and buy the clean 15 conventional.
Here is a list of the Clean 15 and the Dirty 12.
Sweet Bell Peppers
Also: Green beans and kale are moving up on the most sprayed list as well.
Here are the Clean 15, and these are the fruits and veggies that you can eat conventionally because they are not sprayed as heavily with pesticides.
Sweet Corn (watch for GMO)