Can I use these design to sell transfers?

YES up to 100 prints.

What is Sezzle and is there a min purchase Amount?

Sezzle is a great way to shop. You can setup a payment plan with sezzle. There is a min. purchase price of $25 to shop using sezzle. For more information about sezzle, visit sezzle.com.

What if I am on my phone, will I be able to download once I get to my computer?

YES- you can use the download links from your phone as well as from the computer.  Make sure you SAVE your e-mail so you can reference those again if needed. Some files may not have the ability to be downloaded from your phone based on the file type support of your device.