Welcome to PriceMux

PriceMux™ solves one specific headache: you want your online prices to include shipping, but you also sell in person — and the customer standing at your register shouldn’t pay for shipping they’re not getting.

How it works, with a real example

Say you sell a 25 lb bag of dog food for $45, and it costs you about $10 to ship.

If you list it at $55 online, the price covers shipping — your online customer pays $55 and sees “free shipping.” But someone who drives to your store and grabs the bag off the shelf shouldn’t pay that extra $10. List it at $45 instead and you lose $10 every time it ships.

PriceMux gives you both prices at once:

• Online, the bag shows $55 — shipping included.
• At your register, the same bag rings up at $45 — automatically.

You set the rule once — for example, “add $10 to the online price for anything 15 lb and up” — and PriceMux applies it to every product that matches, by weight. Your base price (the $45 you keep in Shopify) never changes; PriceMux only sets the online price on top of it. At the register, it removes the added shipping for you, so in-store customers pay the base price. Change the bag’s base price later and PriceMux updates the online price to match.

Who it’s for

• Shops selling physical goods both online and in person — refill stores, butchers and meat producers, garden and feed suppliers, fabric counters.
• Stores on Shopify Basic and up — no Shopify Plus, Markets, or B2B catalog required.
• Owners who want every price change logged and reversible in one click.

The in-store price only works on Shopify POS Pro — see In-store pricing and Shopify POS Pro for the details. The online side works on every plan.

Install

PriceMux ships through the Shopify App Store. The install link will appear here once the listing is live. In the meantime, see the pricing page for plan details.

Next steps

• Finish setup — show PriceMux prices on your pages and register — the two one-time placement steps after install: pin the base-price blocks on your product pages, and add the POS Pricing tile to your register.
• Editing base prices and weights — how to change the base price your rules read from, using Shopify’s own product editor, bulk editor, or Products CSV.
• Bulk managing rules with a spreadsheet — on the Pro plan: download your rules, edit them in a spreadsheet, and upload them back. PriceMux checks the whole file first, so a mistake in one row never half-applies.