You’ll get refund, if
1. Item is not as described.
2. Item has a security issue.
3. item support is not as promised.
4. an item that has not been downloaded yet.
You’ll not get refund, if
1. you bought an item by mistake.
2. you change your mind.
3. the item don’t meet your expectations.
4. you don’t have enough skill to use the item.