| Cost shape | Lower, because you are buying one person's time with no overhead attached, usually hourly or as a fixed project fee. You may still have to buy design, copy or SEO separately, which is a cost that arrives later. | Higher, because you are buying several specialists, a process and someone to run it. Usually a project fee against a written scope with a payment schedule, plus an optional ongoing plan. |
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| Breadth of skill | Usually deep in one or two disciplines — design, or front-end, or SEO. Some are genuinely good at three. Nobody is good at all of design, development, copywriting, SEO, accessibility and analytics, and the ones who claim to be are the ones to worry about. | Several people, each narrower and deeper. The trade is that coordination becomes a cost somebody pays, and you rarely speak to everyone doing the work. |
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| Who you talk to | The person doing the work. No translation layer, fast decisions, and you can tell within ten minutes whether they have understood the brief. | Usually a lead or a project manager. Better continuity of record and worse immediacy. Ask directly who will be building it, and whether you will ever speak to them. |
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| Continuity | One point of failure. Illness, a better-paying client, a full-time job offer or a change of career ends the relationship, and the institutional knowledge leaves with them. | Redundancy, if the agency is more than one person. Documentation and handover are a large part of what you are paying for here, so it is fair to ask to see what they produce. |
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| Project management | Often you. Chasing content, decisions and scope is real work, and most freelancers have priced the build rather than the herding. | Theirs, in principle. Confirm that means a named person with a schedule rather than an implied service, because it is the thing most often promised and least often staffed. |
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| Something breaks at 7pm | Depends entirely on the individual and on whether you have a support agreement in writing. Many freelancers will help immediately; none of them are obliged to. | Should be covered by a care plan or a support window. Ask what the response time actually is, what counts as urgent, and what happens outside those hours. |
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| Accountability | Personal and direct, which cuts both ways — you get real ownership of the work, and your practical recourse against a sole trader if it goes wrong is limited. | A contract with a company, usually insurance, and a reputation worth more than your invoice. Verify all three rather than assuming them from the website. |
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| Scaling the scope | A second discipline means finding a second freelancer and coordinating the two yourself, including the arguments about whose fault something is. | Absorbed, usually. This is the main thing agencies exist to do, and the clearest case for paying the difference. |
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| Year two | Needs an explicit arrangement up front. A great many freelance relationships simply stop at launch, and the site slowly stops being maintained. | Should be a plan — maintenance, measurement, iteration. If nothing is offered for after launch, you are buying a build rather than a partner, which is fine as long as you know it. |
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| Range of quality | Enormous, in both directions. The best are better than most agencies; the worst will take a deposit and go quiet. | Also enormous. Size is not a proxy for quality, and a big agency can staff your project entirely with people who joined last year. |
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