Most online create yourself webhost that offers e-commerce seem to only offer product sale. I just have a excel spreadsheet file I would like to sell online which would allow the customers to pay and then download.

Questions:
1. How can I do that?

2. I would like to be able to create and maintain the webdesign myself and have access to all the database. Is there a webhost that can do that reasonably?

3. If I’m based in Australia, do I need to host it with an Australian webhost company for the payment purposes?

Thanks!