Merlin™ is a complete retail management platform built and owned by GPK Group. It combines point of sale, back office and head office in one Australian-built system, and it is approved to operate with Metcash — the supply and distribution network behind IGA and independent grocery and liquor. Unlike off-the-shelf tills adapted for retail, Merlin was designed from the inside out for independent Australian supermarkets, grocery stores and liquor/bottle-shop operators, including multi-store groups that need a single head-office view across every site.
What is Merlin?
Merlin is GPK Group’s proprietary retail software. It runs the checkout, manages stock and pricing at store level, and gives multi-store operators central control from head office — with a fully redundant offline mode so the registers keep serving customers even if the internet drops.
One platform, five jobs
- Point of Sale — fast, reliable checkouts that keep working offline.
- Back Office — store-level pricing, promotions, ordering and reporting.
- Head Office — central pricing, ranging, promotions and reporting across multiple stores.
- Stock & Inventory — real-time stock, ordering and shrinkage control built for grocery and liquor ranges.
- Accounting & Supplier Rebates — integrated accounting and automated Metcash supplier-rebate handling.
Why independent retailers choose Merlin
- Metcash-approved — built and certified to operate within the Metcash/IGA ecosystem.
- Australian-owned and built — developed here by people with supermarket and POS backgrounds, with a local Australian help desk.
- Redundant and reliable — keeps processing sales during an internet outage.
- Multi-store ready — head-office control for franchises, groups and warehouses.
- Security-conscious — retail-grade security, backed by GPK’s managed IT and cyber-security teams.
- Continuously developed — actively improved, not legacy software in maintenance mode.
Merlin is trusted by 100+ retail sites across grocery, liquor and general retail Australia-wide.
Built for your store type
- Supermarket & grocery POS — for IGA and independent supermarkets.
- Liquor & bottle-shop POS — age verification, liquor ranging and compliance.
- Metcash-approved POS — how Merlin works within the Metcash/IGA network.
- Multi-store head office software — central control across many sites.
Backed by a full technology partner
Merlin isn’t just software — it’s backed by GPK’s managed IT, cyber security and CCTV & access control teams. That means one partner for your POS, your network, your security and your support.
Proven with Australia’s independent retailers
Morgan’s IGA — a 20+ year partnership
Morgan’s IGA runs five supermarkets across Victoria with 61 POS lanes and 300+ staff. Merlin is a cornerstone of their retail operations — handling pricing and inventory across sites, Metcash integration, and back-office reporting and compliance. See the supermarket & IGA POS page.
“Having worked with GPK for well over 20 years I can honestly say they are like an extension to our family business, so we have complete faith in their ability to problem solve on the spot to keep the wheels turning.”
Neal Morgan, Managing Director, Morgan’s IGA
Ritchies — Merlin across 73 liquor stores
Ritchies, Australia’s largest independent supermarket and liquor group, has run Merlin across its 73-store liquor network since 2023. 98% of Ritchies’ liquor sites rate Merlin as meeting or exceeding their expectations, with live stock on hand, faster lanes and loyalty pricing visible at the register. See the liquor & bottle-shop POS page.
“We can highly recommend the Merlin POS system to any single store operator or multistore group keen to see their POS grow as their business needs grow.”
Karl Loh, Liquor General Manager, Ritchies
Merlin POS FAQ
Is Merlin approved by Metcash?
Yes. Merlin is approved to operate within the Metcash network, including supplier-rebate handling for IGA and independent grocery and liquor stores.
Is Merlin suitable for a single store or only chains?
Both. Merlin runs a single store and scales to multi-store groups with head-office control.
Does Merlin work if the internet goes down?
Yes. Merlin is fully redundant and keeps processing sales offline, then syncs when the connection returns.
Can Merlin handle liquor and bottle-shop requirements?
Yes — liquor ranging, age verification and relevant compliance are supported. See liquor & bottle-shop POS.
How do I buy Merlin?
Book a free demo and GPK will scope your stores, hardware and rollout, then provide a tailored quote.