Choosing the best SEO link building agency safely
Link building is the part of search work with the widest gap between what is sold and what is safe to buy. Every provider promises authoritative placements, most price per link, and the tactics behind two identical looking proposals can differ from genuine digital public relations to a private network that will eventually cost you your rankings. Because the consequences land on your domain and not the provider's, the buying decision is really a due diligence exercise about method. This page sets out what the work legitimately involves, what Google's own policies say about the tactics on offer, and the questions that reveal which kind of provider you are talking to.
- median disclosed retainer, per month (USD)
- $2,000
- agencies with a verified published price
- 21
- verified agencies in the index
- 134
Figures on this page come from the 134-agency verified catalog: each one was fetched from the agency's own published page and matched verbatim, with the source and retrieval date stored beside it.
- 134 agencies verifiedevery fact matched verbatim to the agency's own page
- Quoted and dated, never estimatedlast verification pass 2026-08-18
- 11 cities coveredlocal presence evidenced by offices and serving claims
Agencies with a verified published price
| Agency | Disclosed starting price | Evidenced specialties | HQ | Source | Checked |
|---|---|---|---|---|---|
| Prosperity Media 3 verified facts | AUD 2,000/mo | Content marketingSEO | Surry Hills (Sydney), NSW, AU | prosperitymedia.com.au | August 2026 |
| SimpleTiger 3 verified facts | $5,000/mo | SEO | Sarasota, FL | simpletiger.com | August 2026 |
| Yoghurt Digital 3 verified facts | AUD 2,000/mo | PPC & paid searchSEOSocial media marketing | Surry Hills (Sydney), NSW, AU | yoghurtdigital.com.au | August 2026 |
| Boulder SEO Marketing 2 verified facts | $2,000/mo | SEO | Boulder, CO | boulderseomarketing.com | August 2026 |
| EZMarketing 2 verified facts | $1,500/mo | PPC & paid searchSEO | Lancaster, PA | ezmarketing.com | August 2026 |
| Firebelly Marketing 2 verified facts | $3,000/mo | Social media marketing | Indianapolis, IN | firebellymarketing.com | August 2026 |
| Grounds for Promotion 2 verified facts | $5,000/mo | PPC & paid searchSEO | Boulder, CO | groundsforpromotion.com | August 2026 |
| Hook Agency 2 verified facts | $2,800/mo | PPC & paid searchSEO | Minneapolis, MN | hookagency.com | August 2026 |
| Kalungi 2 verified facts | $50,000/mo | Content marketing | Kirkland, WA | kalungi.com | August 2026 |
| The SEO Room 2 verified facts | AUD 1,500/mo | Content marketingSEO | Canning Vale (Perth), WA, AU | seoroom.com.au | August 2026 |
| Thrive Internet Marketing Agency 2 verified facts | $500/mo | SEO | Arlington, TX | thriveagency.com | August 2026 |
| Ciphers Digital Marketing 1 verified fact | $2,500/mo | SEO | Gilbert, AZ | ciphersdigital.com | August 2026 |
How to vet a link building provider
- Make them describe the method, not the outcome. Ask exactly how a link gets placed: who is contacted, what is offered, who writes the content, and whether money changes hands. A provider who will not describe the mechanism, or who answers only with domain authority numbers, is describing a product they do not want you to look inside.
- Read Google's position on the tactics offered. Google's spam policies for web search identify link schemes, including buying or selling links that pass ranking signals and exchanging goods or services for links, as a violation that can lead to ranking action against a site. Check each proposed tactic against that document before you agree to it.
- Require approval rights over every placement. Insist that no link goes live without your sign off on the site and the content, and that you receive a full log of every placement with the anchor text used. Without a log you cannot audit the profile later, and you cannot clean it up if the provider disappears.
- Judge the site, not the metric. Third party authority scores are estimates and are routinely gamed. Look at the actual site: does it have real readers, real editorial standards, and content unrelated to paid placements? A site whose only purpose is publishing guest posts passes no useful signal, whatever its score.
What separates the models on offer
Broadly there are three. Digital public relations earns coverage by producing something worth writing about: original data, a useful tool, expert commentary offered to journalists. It is slow, it is expensive per placement, and the links arrive in publications with genuine audiences. Outreach based placement pitches content to site owners in your subject area, which is legitimate when the target site has real editorial judgement and questionable when the pitch includes a fee. Marketplace buying is the purchase of placements at a list price, which is what Google's policies describe when they discuss buying links that pass ranking signals, and it is the model most likely to be sold with a per link price sheet.
Price is a signal here in an unusual way. Genuinely earned coverage costs a lot per placement because it takes senior time and produces few links per month. A price sheet offering dozens of placements a month at a low per link cost is describing a different product entirely, whatever its marketing says. That does not always mean fraud, but it does mean you should assume the placements come from sites that exist to sell them, and price the risk to your domain accordingly rather than the invoice.
What to require in the contract
Four things. A complete placement log with URL, anchor text and date, delivered monthly, so the profile is auditable by you or by a third party. A prohibited tactics list naming private blog networks, automated placement and paid links that pass ranking signals, so nobody can claim the method was implied. Approval rights over each target site before outreach begins. And a clause stating that placements are not removed or altered after the contract ends, since links quietly disappearing on termination is a known way of forcing renewal.
Then measure the right thing. The point of a link is not the link, it is the visibility and the traffic it eventually supports, so judge the engagement on movement in the pages you were trying to lift and on the enquiries those pages produce. Set the baseline before the first month. Ask what the provider would recommend stopping if the numbers did not move, and be wary of any answer that consists only of buying more links faster.
Questions people actually ask
- Is buying links against Google's rules?
- Google's spam policies identify link schemes, including buying or selling links that pass ranking signals and exchanging goods or services for links, as a violation, and say such practices can lead to ranking action. Paid placements are permitted when the links are qualified so they do not pass ranking signals, which is exactly what a price sheet product usually does not do.
- How many links should a campaign produce each month?
- There is no correct number, and a provider quoting a fixed monthly quantity is describing a supply chain rather than an outcome. Genuine editorial coverage arrives in small numbers. Judge the engagement on the visibility and enquiries the target pages gain, not on the count of placements delivered.
- What does a risky provider look like on the first call?
- Guaranteed placement counts, a per link price sheet, refusal to name target sites in advance, authority scores used in place of describing the site, and no written prohibited tactics list. Any one of these is worth a follow up question. Two or more together usually tells you what you are buying.
- Can bad links be undone?
- Partially. Placements can sometimes be removed by asking the site owner, and Google provides a disavow mechanism for cases where that fails, but recovery takes time and the intervening losses are not refundable. Prevention through approval rights and a placement log is far cheaper than remediation.
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The median advertised marketing retainer starting price per month in the US agency market was $2,000 in August 2026, across 21 verified agency facts recorded in FindAgency HQ Pricing Transparency Index.
Cite as: "FindAgency HQ Pricing Transparency Index", updated 2026-08-18, https://findagencyhq.com/best-seo-link-building-agency/.