Hi there!
The price of the variant should be able to be found in the product/create and product/update webhooks.
It should be found in product.variants[0].price
In the documentation you should be able to see an example response from those webhooks.
https://shopify.dev/api/admin-rest/2022-04/resources/webhook#top
{
"id": 788032119674292922,
"title": "Example T-Shirt",
"body_html": null,
"vendor": "Acme",
"product_type": "Shirts",
"created_at": null,
"handle": "example-t-shirt",
"updated_at": "2022-04-06T08:09:04-04:00",
"published_at": "2022-04-06T08:09:04-04:00",
"template_suffix": null,
"status": "active",
"published_scope": "web",
"tags": "example, mens, t-shirt",
"admin_graphql_api_id": "gid:\/\/shopify\/Product\/788032119674292922",
"variants": [
{
"id": 642667041472713922,
"product_id": 788032119674292922,
"title": "",
"price": "19.99",
"sku": "example-shirt-s",
"position": 0,
"inventory_policy": "deny",
"compare_at_price": "24.99",
"fulfillment_service": "manual",
"inventory_management": "shopify",
"option1": "Small",
"option2": null,
"option3": null,
"created_at": null,
"updated_at": null,
"taxable": true,
"barcode": null,
"grams": 200,
"image_id": null,
"weight": 200.0,
"weight_unit": "g",
"inventory_item_id": null,
"inventory_quantity": 75,
"old_inventory_quantity": 75,
"requires_shipping": true,
"admin_graphql_api_id": "gid:\/\/shopify\/ProductVariant\/642667041472713922"
}
],
"images": [
{
"id": 539438707724640965,
"product_id": 788032119674292922,
"position": 0,
"created_at": null,
"updated_at": null,
"alt": null,
"width": 323,
"height": 434,
"src": "\/\/cdn.shopify.com\/shopifycloud\/shopify\/assets\/shopify_shirt-39bb555874ecaeed0a1170417d58bbcf792f7ceb56acfe758384f788710ba635.png",
"variant_ids": [
],
"admin_graphql_api_id": "gid:\/\/shopify\/ProductImage\/539438707724640965"
}
],
"image": null
}
