Selling products from different locations

Site URL: https://www.quartz.gallery/shop

Hello! I've been trying to find a solution but I'm struggling.

We sell art online. This means that our products are dislocated around the world and we would need to calculate a different delivery price depending on where the artwork and buyers are.

Seems like Squarespace always assume that my products is in one place, so I created different options but if an artwork is in US and someone from UK will buy it, they will select UK from the shipping options and will pay like the delivery was UK to UK.

Is there any way I can fix this?
I hope I made myself clear!

I'm having this problem too! I sell clothes & accessories from different brands and shipping costs vary massively depending on where the brand is based.