Writing
Reading SOP samples properly

In short
Use samples to learn structure: how long an opening runs, where evidence appears, how a fit paragraph names things. Do not use them for sentences. The phrases that recur across published samples are the exact phrases admissions readers see most often, which makes borrowing them worse than writing plainly.
Every applicant reads samples, and most read them the wrong way round: looking for lines to reuse rather than for the shape underneath.
The shape is the transferable part. The sentences are the part that gets you noticed for the wrong reason.
What a sample is good for
Proportion. Seeing that the opening is three sentences rather than three paragraphs, and that the fit section runs longer than the motivation section, tells you more than any word count rule.
The order of evidence. Good statements introduce a claim and then the thing that proves it, in that order, and reading a few examples makes that pattern obvious.
Register. The distance between how people think a statement should sound and how good ones actually sound is the single biggest correction most drafts need.
Our annotated samples are built for this: each one carries notes on why a paragraph does what it does, which is the part a bare sample cannot give you.
Where samples do damage
Openings are the worst offender. The sample openings circulating online have been copied so widely that several of them are recognisable on sight to anyone who reads applications for a living.
Borrowed structure plus borrowed phrasing produces a document that is technically original and completely generic, which is the failure mode that similarity checking does not catch and a reader does in seconds.
There is also a subtler cost: a sample written by a strong candidate in a different field can push you into claiming a kind of experience you do not have, because the shape of the paragraph demands it.
How to use one without being captured by it
Read three samples, then put them away and write your own draft from your own notes. Return to the samples afterwards, to check proportion and order rather than wording.
If a sentence in your draft could appear unchanged in somebody else's statement, cut it. That single test removes most of the damage.
Then edit for specifics: numbers, names, dates, outcomes. Our note on editing your own draft is the method, and the mistakes that get statements rejected is the list of what to look for.
Related questions
Is using a sample plagiarism?
Copying sentences is. Learning structure is not. The practical risk is less about plagiarism rules than about sounding like every other applicant.
Are paid samples better than free ones?
Not reliably. What matters is whether the sample is annotated, so you can see why each part is there, and whether it resembles your field at all.
Should I show a sample to my writer?
Show them your own draft and your record instead. A sample tells a writer what you admire; your draft tells them who you are.