How AftershockPC added over $300K in profit in 90 days with Brew

AftershockPC is one of the largest custom PC builders in Australia, shipping high-spec gaming and workstation rigs configured to order. They've built their reputation on build quality, component choice, and service, not on cutting corners.

But PC building is a brutally low-margin business. The components themselves leave very little room: the GPU, CPU, and memory in a high-end build are sold at close to cost, and the profit lives in the margins around the hardware. AftershockPC came to us with a clear question: how do we make meaningfully more profit on orders we're already winning?

A custom PC is a considered, often expensive purchase. By the time a customer reaches checkout they've already spent time configuring exactly what they want, and the last thing AftershockPC wanted was to add friction or risk a sale they'd worked hard to earn.

At the same time, the natural add-ons that protect margin and improve the customer's experience were either buried on product pages or missed entirely: warranties, assembly and stress-testing, shipping protection, peripherals and accessories. The team needed a way to surface the right add-on at the right moment, without slowing the buyer down.

We didn't treat AftershockPC like a generic store. We mapped their funnel and used Brew to run upsells across two moments that matched how their customers actually buy.

Inside checkout, we surfaced high-margin protections and services such as extended warranty, shipping protection, and assembly options, framed as part of getting the build right, so they felt like a natural part of the purchase rather than an interruption. Then, in the post-purchase step that runs after checkout but before the thank-you page, we layered one-click offers for accessories and peripherals matched to the exact build the customer had just configured: monitors, mechanical keyboards, headsets, and cables. Because their payment was already captured, customers could add an item in a single click without re-entering any payment details.

Because every offer was targeted to what was already in the order and could be accepted in one tap, none of it added checkout friction. From there, A/B testing did the tuning. Brew split traffic across offers and pricing and promoted the winners automatically.

In the first 90 days, the combined checkout and post-purchase upsells generated more than $300,000 in additional profit. That money dropped almost entirely to the bottom line, on orders AftershockPC had already won.

Crucially, checkout conversion held steady. Because the post-purchase offers ran after payment and the checkout offers were built to feel like part of the purchase, the lift was incremental, not borrowed from the original sale. For a business where hardware margins are measured in single digits, turning the moments around the sale into profit changed the economics of every order.