WhatBox WhatBoxWhatBox prices every Shopify order two ways — your real in-house cost and Amazon MCF — side by side, in dollars. Then it ships whichever one's cheaper, automatically.
Live and running in production today — not yet listed on the Shopify App Store. Apply for free beta access, or join the waitlist to hear about public launch instead.
Connect Amazon. Sync stock. Route orders. That's the whole feature set of every Amazon multi-channel fulfillment app for Shopify we've evaluated — and not one of them ever shows you a dollar amount. No fee preview. No cost comparison. Nothing.
WhatBox computes your actual in-house cost — box, postage, labor — and puts it next to Amazon's real fee, on every order, before anything ships.
This is the whole product, distilled into one card on every order.
No guessing what Amazon will charge after the fact — you see it before you click.
FBA becomes a native Shopify location, and the routing happens without you touching it.
You find out when something's wrong before your customer has to tell you.
Every dollar, on every order, written down in plain English.
These aren't live yet — they're on the roadmap.
At onboarding: "You would have saved $X last quarter" — before you commit to anything.
Auto-routes orders once savings clear your threshold, with FBA stock-cover guardrails.
"You lost $84 in savings because SKU X was out of FBA stock — send 40 units."
A delivery-promise badge for your product pages.
Catches Amazon MCF overcharges automatically.
The same math, beyond the US.
Real shipping rates at checkout, not estimates.
No add-on menu.
Launch pricing — subject to change as we head to public launch.
Marketplaces and sync cadence are never gated — every tier gets all of it. Try it fully functional; nothing to pay until you decide it's worth it.
We're opening up free access to a small group of merchants ahead of the public Shopify App Store launch. You'll run WhatBox on real orders at no cost — in exchange, we'll lean on you for feedback: bugs, rough edges, and the stuff that's confusing before it's obvious to us.
This is pre-launch software. Expect some sharp edges, and use it with the caution that implies. If that's a fair trade for free access and a direct line to shape the product, we'd like to hear from you.
Built by a merchant,Princeton Popcorn is a real popcorn business selling on both Shopify and Amazon. Its founder ran both channels and kept guessing which orders MCF should ship — no tool would just show the two costs side by side. So he built one.
WhatBox has been running in production on Princeton Popcorn's own orders since day one. It's not a concept — it's the tool that stopped the guessing, now being opened up to other merchants who carry FBA inventory and pack their own DTC orders.
It's live and running in production — just not yet listed on the Shopify App Store (we're in a custom-distribution phase ahead of public launch). Join the waitlist and we'll bring you in for early access.
Flat $15, $29, or $49 a month — every marketplace, inventory sync included, no add-on menu. You see your per-order savings on every tier. The trial is fully functional before you're ever billed.
No — WhatBox reads your live carrier rates from ShipStation, at your negotiated pricing, to calculate your true in-house cost. It's not a replacement, it's the missing math layer between your two shipping options.
Yes. Split orders send some lines to Amazon MCF and the rest through your own process, with honest three-way math since a split ships as two separate packages.
No. Price guard is raise-only — it alerts you when your Shopify price undercuts Amazon and gives you one-click fixes, but it never lowers your prices automatically.
The watchdog tracks every sent order against Amazon's own promised date. If it's late, undeliverable, returned, or lost, you get an email with the reason and one-click fixes — retry at Amazon, or release it back to in-house shipping.
Beta means using WhatBox now, free, on your real orders — in exchange for feedback while things are still being smoothed out. The waitlist is lower-commitment: it just gets you an email when WhatBox is publicly available on the Shopify App Store. Pick whichever fits how hands-on you want to be right now.
The waitlist is the lower-commitment option — no beta, no rough edges, just an email when WhatBox is publicly available on the Shopify App Store. Want to use it now instead? Apply for beta access.