Updating Product Pricing Based on Weight of each product

[SS-Val]

Hello, we sell silver in different forms and sizes, and because the price of silver can fluctuate a lot, we need a way to update our product prices based on the price per gram.

Here’s what we’re hoping to do:

1. Each product has a known weight in grams.
2. When we update the price per gram, the product prices should automatically adjust accordingly.
3. The per-gram pricing should stay hidden from customers, and they should only see the final price.

Is this something we can set up directly in Shopify or some app?

Any advice would be appreciated!