Can i develop woocommerce theme with elementor free?
Yes you can develop Woocommerce theme with Elementor Page Builder.
There is no problem I hope.
Can you give me example theme which made like this?
Here is example
For more you can visit this page
Just to be clear - you need to know how to code and create themes properly.
Elementor is great and a solid solution to integrating a page builder, but it is still only a plugin and in a premium marketplace an author is still going to need to know how to write, edit etc code to ppl after the theme as a whole.
For example if there is a big somewhere with the theme then as the author you would be responsible for fixing that.