Shopify can link to QuickFile through Zapier. This would require a Power User Subscription on QuickFile’s end, and I believe you need a premium Zapier account (although I’d recommend checking this out with Zapier directly).
There’s no way at the moment to connect Amazon to QuickFile. However, if you have access to an API with Amazon, then the QuickFile API could help achieve what you’re looking for.
Again, if you have access to an API on their end, you should be able to have something coded to link the two.