Varia adds custom fields to your product pages and applies the extra amount at checkout with a Cart Transform function. Your store keeps one shared hidden product rather than one per option, so your catalog stays the size it should be and discount codes apply to real line items. Options include text, numbers, dates, dropdowns, checkboxes, color swatches with your own images, file uploads and conditional fields. Set a fixed amount, an amount per character, or per choice.

• Add-on amounts applied at checkout with no duplicate products in your catalog
• Discount codes keep working because options become real line items
• Text, dropdowns, swatches, file upload and conditional fields
• Fixed, per-character and per-choice amounts
• Does not require Shopify Plus