Where can I get pure tin from?

I'm curious, where exactly can one procure pure tin? Are there specific suppliers or sources that are known for their high-quality tin? I'm looking to purchase some for a project and want to ensure I'm getting the best possible product. Are there any factors I should consider when selecting a supplier, such as reputation, price, or availability? Additionally, are there any potential risks or drawbacks to be aware of when sourcing pure tin? I'd appreciate any insights or recommendations you might have on this matter.