Basically what I want is the price on the product page to change according to the weight

Technical Q&A
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Topic summary

A user wants product prices to automatically adjust based on predefined weight values (100g to 1kg) that are set when adding products to their store. The weight should be displayed to customers but not selectable by them.

The user has a specific pricing structure where each weight increment adds a different cost to the base product price (e.g., 100g adds $6.40, 200g adds $7.80, up to 1kg at $18.80).

Proposed Solutions:

  • One responder questions why customers cannot select weight amounts and suggests creating weight variants with defined values and prices as the simplest approach.

  • Another responder requests clarification on whether separate products are being created for each weight or if weight is a variant. They propose using product metafields to store weight/price data and implementing the Cart Transform API to dynamically modify prices when items are added to cart.

The discussion remains open, awaiting clarification on the product structure and implementation approach.

Summarized with AI on October 31. AI used: claude-sonnet-4-5-20250929.
1

While adding a product, i also add weight of the product. So there is a price of product lets say X, and according to weight product price will varry (weight will be defined while adding product). Lets say we if it is 100g the price Y should be added in product cost X. Now the total cost of the product will be X+Y. Customer can not choose the option of weight. They only can see the weight of the product.

I have option of weight like 100 grams: usd6.4; 200 grams:usd7.8; 300 grams:usd9.1; 400 grams:usd10.5; 500 grams:usd11.9; 600 grams: usd13.3; 700 grams: usd14.6; 800 grams:usd16; 900 grams:usd17.4; 1kg : usd18.8

2

How can you not let the customer choose the amount the customer wants to buy.

The easiest way here is to create a weight variant with your defined values and prices.

3

Hello,

Could you please clarify the following?

  • Are you creating separate products for each weight option, or are you adding weight as a variant under a single product?

    To adjust product prices based on weight, we can create a product metafield to store weight and its corresponding price. When the product is added to the cart, we can use the Cart Transform API to modify the product price dynamically based on the weight.