The True Cost of DIY Marketing vs. a Done-For-You Agency

Every business owner has asked the same question: "Can I just do this myself?" When it comes to marketing, the answer is technically yes — but the real question is whether you should. When you add up the true cost of DIY marketing, the numbers tell a very different story from what most people expect.

The Visible Costs of DIY Marketing

Most business owners only consider the obvious expenses: ad spend, a Canva subscription, maybe a scheduling tool. But these surface-level costs represent just a fraction of what DIY marketing actually costs your business.

The Hidden Costs Nobody Talks About

• Your time: At a conservative £150/hour founder rate, 15 hours per week on marketing costs £117,000 per year in opportunity cost
• Wasted ad spend: Without expert management, businesses waste 25-40% of their ad budget on poor targeting and unoptimised campaigns
• Tool subscriptions: SEO tools, design software, email platforms, analytics — these add up to £500-£2,000 per month
• Learning curve: Every hour spent watching tutorials or reading guides is an hour not spent generating revenue
• Slow execution: What takes a DIY marketer two weeks takes an experienced team two days — and speed directly impacts revenue

The In-House Hire Alternative

Some business owners consider hiring an in-house marketer instead. Let us look at the real numbers for London in 2026:

• Average salary for a mid-level marketing manager: £45,000-£60,000
• Employer National Insurance and pension contributions: £8,000-£12,000
• Tools and software licences: £6,000-£15,000 per year
• Training and professional development: £2,000-£5,000 per year
• Management time and oversight: Priceless (but very real)
• Total: £61,000-£92,000 per year for ONE person with limited expertise across channels

“For the cost of one junior marketing hire, you can access an entire team of specialists — strategists, designers, copywriters, media buyers, and analysts — who have already spent years perfecting their craft.”

— Marketing Kennedy

What Done-For-You Actually Costs

A comprehensive done-for-you marketing service from a reputable agency typically ranges from £2,500 to £8,000 per month depending on scope. For that investment, you get a full team, proven systems, established vendor relationships, and — most importantly — accountability for results.

The 90-Day Payback Period

Our data shows that clients who switch to our done-for-you service recoup their investment within 90 days on average. This happens because we eliminate wasted spend immediately, deploy proven campaigns from our playbook, and focus relentlessly on revenue-generating activities rather than busywork.

Making the Decision

The question is not whether you can afford done-for-you marketing. The question is whether you can afford not to have it. Every month you spend struggling with DIY marketing is a month your competitors with professional teams are pulling further ahead.