What a $5M-$50M brand should expect from a Shopify Plus agency

What a Shopify Plus agency actually is

First, some context. There are roughly 1,200+ agencies in the Shopify Partner ecosystem. A much smaller number are Shopify Plus Partners, which requires meeting revenue thresholds and quality standards set by Shopify. And an even smaller number specialise exclusively in the $5M-$50M brand segment.

This matters because the needs of a $5M brand are fundamentally different from a $500K startup or a $500M enterprise. You need an agency that understands scaling commerce operations, complex integrations, and the specific pressures of growing through the mid-market. Our guide to choosing a Shopify Plus agency in Australia covers the evaluation criteria in detail, but here's the short version of what to expect.

Discovery should be non-negotiable

Any agency quoting you a build price without a discovery phase is guessing. Full stop. A proper discovery includes a technical audit of your current platform, integration mapping, content and data audit, UX review, and a clear scope of work with itemised deliverables.

Discovery typically costs $5,000-$15,000 and takes 2-4 weeks. It's the single best investment you can make before a build, and we covered why in our piece on hidden migration costs. If an agency wants to skip discovery and jump straight to building, that's a red flag. They're either not experienced enough to know what they don't know, or they're banking on scope changes to pad the project later.

Pricing benchmarks for serious builds

Let's talk numbers, because most agencies won't. For a $5M-$50M brand on Shopify Plus, here's what realistic budgets look like.

A theme-based Shopify Plus build with custom design, standard integrations (ERP, email, reviews), and checkout customisation typically runs $80K-$150K. A headless build using Hydrogen with a dedicated CMS like Sanity and advanced search via Algolia runs $130K-$250K+. A platform migration from Magento or BigCommerce adds 20-30% to either of those ranges due to data migration, redirect mapping, and integration rearchitecting.

If someone is quoting you $40K for a full Shopify Plus build, you're either getting a theme install with minimal customisation or you're about to experience significant scope creep. Neither outcome serves a brand doing serious revenue. We broke down the full cost picture in our analysis of the real cost of headless Shopify Plus.

Opinions, not just execution

The biggest difference between a good agency and a great one is whether they push back on you. A great agency has opinions about your business. They'll tell you when an idea won't work. They'll challenge your assumptions about what your customers need. They'll recommend against building features that won't move the needle.

This is uncomfortable, and plenty of brands choose agencies that just say yes to everything. Agencies that only say yes produce mediocre work because they're building what you asked for, not what your business needs. The brands that see the best results, like the +175% increase in orders we delivered for Lo & Co, get there because the agency brought strategic thinking to the project, not just technical execution.

What good opinions sound like

A good agency might tell you your homepage doesn't need a redesign: your product pages need better UX that builds perceived value. Or that you don't need a custom loyalty program: use an existing tool and invest the savings in better email flows. Or that you don't need headless yet: your current architecture can support 3x your current revenue with optimisation.

An agency that only tells you what you want to hear is a vendor. An agency that tells you what you need to hear is a partner.

How ongoing relationships should work

The build is just the beginning. Post-launch, most brands need ongoing development, optimisation, and strategic support. Here's how that should be structured.

Retainer relationships should be sprint-based, not open-ended hourly billing. Each sprint (typically 2-4 weeks) should have defined deliverables, clear priorities, and measurable outcomes. You should know exactly what you're getting each month, not just how many hours were burned.

Budget for ongoing retainers typically runs $5K-$15K/month depending on scope. This covers feature development, bug fixes, performance optimisation, and strategic recommendations. The best agencies will structure this as a roadmap with sprint durations rather than dollar amounts, giving you control over pace and priority.

Red flags to watch for

No discovery phase offered. Vague pricing with it depends as the default answer. Case studies that show designs but no business metrics. A team that doesn't ask about your integrations, your ERP, or your operational workflows. Proposals that focus entirely on design and ignore the balance between customisation and standardisation. And any agency that suggests rebuilding everything without evaluating whether iteration might be smarter.

What to ask in your first conversation

Skip the tell me about your agency warmup. Ask these instead. What's the most common mistake you see brands our size make on Shopify Plus? Can you walk me through a project that went wrong and how you handled it? What would you recommend we don't build? How do you handle scope changes mid-project? What does your team structure look like for a project our size?

The answers will tell you more about the agency than any portfolio or pitch deck. You want specificity, self-awareness, and a clear point of view on commerce, not generic sales language.

Finding the right fit

The right agency for a $5M brand isn't necessarily the right agency for a $50M brand. The right agency for a DTC fashion brand isn't the same as the right agency for a B2B industrial supplier. Fit matters more than reputation.

Look for agencies that have worked with brands at your scale, in your vertical, with your complexity level. Ask for references you can actually call. And pay attention to how they communicate during the sales process, because that's how they'll communicate during the project.

If you're evaluating agencies and want a straight conversation about what your store actually needs, we're here for that. Even if we're not the right fit, we'll tell you honestly.