Your checkout holds when the traffic comes.

For shops running November campaigns. We load-test at an agreed peak and run every checkout path end to end, then hand you a go/no-go report.

Bookings close mid-November. The work has to finish before your campaign starts.

Black Friday Readiness
2–3 days
Price, excl. VAT
from €1,200
load test · checkout · ramp to the agreed peakIllustrative

No-go

Checkout fails before your expected peak. The report ranks the fixes by revenue at risk.

Find the breaking point in a test, not in the campaign. We ramp the load up to the peak we agree with you, only with written permission from you and your host.

Campaign traffic finds the checkout bugs. It finds them live.

  • Checkout down while ads run

    You paid for clicks that couldn’t buy.

  • Stock limits that let the last item sell twice

    Two customers paid for one product, and one of them writes to support.

  • Discount codes that stack or never apply

    Margins disappear, or customers abandon the cart at the code field.

  • Failed payments with no way back

    The customer sees an error, the order is half-created and the sale is gone.

Black Friday Readiness

Your checkout holds when the traffic comes.

Time
2–3 days
Price
from €1,200

Included

  • Load test at an agreed peak
  • Checkout and payment flows end to end, up to 5 critical flows
  • Discount codes, stock limits, payment failures and confirmation emails
  • Go/no-go report with fixes ranked by revenue at risk

Not included

  • Infrastructure changes
  • Code fixes

From call to go/no-go. Before your campaign starts.

  1. Free 30-minute call

    You tell us your campaign dates, expected peak and which checkout flows matter most.

    30 minutes

  2. Permission and access

    Written permission from you and your hosting provider, plus a test account and payment test mode. NDA first if you need one.

    Before we start

  3. We test

    A load test at the agreed peak, then every checkout path: discounts, stock limits, failed payments, confirmation emails.

    2–3 days

  4. Go/no-go report

    Every problem reproduced and ranked by revenue at risk, with the call: go, or fix these first.

    Report and call

What you get. Fixes ranked by revenue at risk.

black-friday-report · go/no-goIllustrative
  1. CriticalLast item in stock can be bought twice at the same moment/checkout
  2. CriticalFailed card payment leaves a half-created order and no retrypayment step
  3. HighDiscount codes stack past the intended limit/cart
  4. MediumConfirmation email arrives late under loadorder emails
  5. PassGuest checkout with a valid card completes at the agreed peakload test

Could this be happening to you? It happened to them.

Case 002

Shopify shop · shipping

A laptop screen with a checkout test run, “heavy-cart.spec.ts”: the 24 kg cart to zone EU gets “no shipping rate” in red; one 12 kg bag to EU and UK gets “rate found” in green.

The biggest baskets can’t check out.

Carts heavier than the top shipping tier get no rate, so checkout stops.

Before
Carts over 20 kg get no shipping rate.
After
An open top tier; a heavy-cart test per zone.
Read the case file

Black Friday questions. Before you book.

Why do you need permission from our hosting provider?

A load test looks like an attack to a hosting provider. Without their written permission, it can get your traffic blocked or your account flagged. We need yours and theirs before we start.

How late can we book?

Bookings close mid-November, because the work has to finish before your campaign. It takes 2–3 days, so book early.

Do you fix what you find?

No. The report ranks the fixes by revenue at risk. Your developers can fix them, or we can fix the list in a Fix Sprint if there is time.

How many flows are covered?

Up to 5 critical flows for €1,200. Larger scope is priced after the call.

What happens after Black Friday?

Flow Watch keeps checking your checkout through December. After the season this offer becomes Checkout Assurance, which runs all year.

Tell us what you’re shipping.

An app, a rewrite, an AI agent, an automation, or a release that needs testing. A free 30-minute call, then a price in writing. If you don’t need us yet, we’ll say so.

Book a free call