excel license

[hasanpmp]

I created this Excel sheet from my best practices working as planning engineer during my 10 years experiences.
Now I want to sell my excel sheet for all engineers at very cheap price
But I don’t know where to sell it
Is there any website for selling my sheets?

Also how can I protect my sheets by license to use for one user only?
Please help me

 

[shg]

Excel has very limited features for protection of intellectual property. You can lock cells, hide formulas, and protect worksheets, but all of that can be readily overridden.

Excel's protection features are design to prevent inadvertent changes to the workbook design by benign users.