Get one product variant with price, SKU, barcode, options and inventory data.

{  "id": "example",  "product_id": "example",  "title": "Approve supplier payment",  "display_name": "example",  "sku": "example",  "barcode": "example",  "price": "example",  "compare_at_price": "example",  "position": 0,  "inventory_quantity": 0,  "inventory_item_id": "example",  "inventory_policy": "example",  "taxable": false,  "available_for_sale": false,  "selected_options": [],  "image_url": "example",  "created_at": "example",  "updated_at": "example"}