Link building is the part of search marketing most likely to be sold badly, and ecommerce is where the mismatch is sharpest. Editors link to things that are interesting, and a product page is rarely interesting to anyone but a buyer. That single fact explains most of what goes wrong: providers promise links to category and product URLs, discover that nobody will give them away, and quietly fall back on paid placements and low quality networks that carry real risk. Understanding why the work is hard is the fastest way to tell a serious provider from one selling a monthly quantity of links.
Why product and category pages are the hardest targets
A link is an editorial decision made by someone with no obligation to you. Journalists, bloggers and researchers link to things that help their readers: data, tools, explanations, unusual stories. They do not link to a listing for a mid range office chair, however good the chair is. This is why competent ecommerce link acquisition almost never aims directly at the money page. It builds something genuinely linkable elsewhere on the site, a buying guide with real testing, a calculator, a piece of original data from your own order history, a comparison that names competitors honestly, and then makes sure that asset connects internally to the categories that need authority. When a provider promises a set number of links to your category pages every month, ask them to describe the page an editor would be linking from, and why that editor would agree. The answers separate the field quickly. If the honest answer is that the site accepts paid contributions, that is a purchased link, which Google's spam policies describe as link spam when it passes ranking signals, and it should be priced and risked as such rather than presented as earned coverage.
The three things sold as link building
The first is digital PR: creating something newsworthy and pitching it, which produces genuine editorial links, occasionally in large numbers, and is expensive and unpredictable per campaign. The second is relationship or resource outreach: finding pages that already list suppliers, guides or tools in your category and earning inclusion, which is slower, cheaper and produces fewer but sturdier links. The third is placement buying, where the provider pays a site owner for a post containing your link. All three appear in proposals under the same heading and at similar monthly prices, and only the first two are what most buyers think they are purchasing. Ask directly: for each link you deliver, does money change hands with the publisher. A provider that answers honestly, and some will say yes and explain how they limit exposure, is a provider you can make an informed decision about. One that will not answer is one whose links you cannot assess, and since a disavow cannot undo the ranking you never earned, the cost of finding out later falls entirely on you.
How to judge quality without a tool score
Third party authority metrics are convenient and easily manipulated, so use them only to sort, never to decide. Look at the linking page itself and ask whether a real person would read it. Does the site have an audience, an author with a name and a history, a subject it genuinely covers. Does the page you would be linked from have any purpose beyond hosting links. Is your link surrounded by unrelated links to a payday lender, a casino and a moving company, which is the reliable signature of a site that sells placements to anyone. Ask the provider for the last ten links they built for a client in a similar category and open every one. This is the single most informative fifteen minutes in the whole vetting process and very few buyers do it. Look also at relevance: one link from a niche publication your customers actually read is worth more than a dozen from general sites with impressive scores, both for ranking and because it may send buyers directly. When you move from vetting the practice to choosing a provider, that sample of ten live links is the evidence the decision should rest on.
What a reasonable engagement looks like
Expect fewer links than the pitch decks suggest and expect them to arrive unevenly. Genuine outreach has a low response rate, and a month may produce two placements while the following month produces seven. A provider who guarantees an exact number every month is either buying them or counting things you would not count, such as directory entries, syndicated press releases or social profiles. Expect the first meaningful movement in rankings to lag the links by weeks or months, and expect the effect to be visible on category level competitiveness rather than instantly on one product. Insist on a monthly list of live URLs you can check yourself, with the anchor text used, and check that the links are still live a quarter later, because placements on weak sites disappear. Finally, agree what happens to the work if you stop: earned links stay, and that is the whole argument for paying more for them, while rented placements vanish when the payments do. Ask each candidate which kind you are buying, and get the answer in the proposal rather than the sales call.
Questions people ask about ecommerce link building
Is buying links dangerous for an ecommerce site?
Google's spam policies treat links that pass ranking signals in exchange for payment as link spam, and sites can lose visibility over it. The practical risk varies with scale and obviousness, and plenty of stores do it without visible consequence for a while. What matters for a buyer is that you know which kind of link you are paying for, so you are accepting the risk deliberately rather than discovering it in a proposal footnote.
How many links does an ecommerce site need?
There is no threshold, only a comparison. What matters is your authority relative to whoever currently ranks for the categories you want, and that varies enormously by market. Ask a provider to show you what the sites ranking for your three most valuable category terms look like in terms of referring domains, and to be explicit about whether closing that gap is realistic within your budget.
Should links point at the homepage, categories or products?
Most earned links will land on your content, which is normal and not wasted, because authority flows internally. Category pages are the usual commercial target since they serve the widest set of buying queries. Product pages rarely earn links unless the product itself is genuinely novel. A sensible programme earns links where they are earnable and then fixes internal linking so the commercial pages benefit.
Can I do any of this myself?
Yes, and the cheapest wins are usually in house. Suppliers, manufacturers and trade bodies often maintain stockist or partner pages and will list you for the asking. Trade publications in your category take contributed expertise. Your own order and returns data can produce a genuinely original statistic nobody else can publish. Those cost time rather than budget and tend to produce more relevant links than an outreach retainer.