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YourSim ...... Monte Carlo simulation to the people!

...........an easily graspable decision tool, easy to use for those who are not mathematicians, statisticians or finance analysts ..........

You don't need expensive courses to become able to use YourSim.  Its interface is simple and intuitive, a straightforward window with only the most important data to relate to, regarding demand, price and variable and fixed costs.  There are no pop-ups (except standard Excel warnings if you use unvalid data), this is a spreadsheet workbook with no macros or other code applied by the programmer. Just enter your numbers, decide how they are distributed, and make up your mind about how your business is sited and organized.  Then tap <F9> for calculation, and there you are.  (Click on the image to view it in full size.)

By moving the cursor to the red corner of some of the cells, explanation, help and advice is revealed:

Charts show how the model has used the data you put into it. (From another calculation of the same case, thus showing slightly different numbers.  Click on the image to view it in full size.)

In the sheet "Out" charts show how the output data are distributed, and illustrate the "danger zones"  in red.  One-sided and two-sided confidence intervals contribute to give you an understanding of what dangers and opportunities you are up to.  (Click on the image to view it in full size.)
Diagrams over cumulated probability adds more to the picture of the risk involved with your business idea.  (Click on the images to view them in full size.)