eBay Cassini Algorithm UK (2026):
Beginner Guide to Getting Found

If you are new to eBay, Cassini can sound mysterious. In practice, it is just eBay's search system deciding which listings deserve space in Best Match. The good news is that beginners do not need hacks. You need clear listings, competitive pricing, strong dispatch habits, and a process that turns views into sales.

This guide is written for UK sellers in 2026 and breaks Cassini down into simple actions. If you follow the steps below, your listings should become easier to find, easier to trust, and more likely to convert.

Step 1: Start with search intent, not your own wording

Many beginners title items the way they would describe them, not the way buyers actually search. Cassini first needs to understand what your listing is. That means strong keyword relevance.

1. Lead with the brand and product: Nike Air Max 270, Sony WH-1000XM5, Lego Star Wars.
2. Add the exact model or key identifier: size, colour, storage, part number, fragrance volume, or edition.
3. Use plain language: skip filler like "look", "wow", or repeated punctuation.
4. Match the correct category: the wrong category weakens both visibility and conversion.

One useful habit is to check sold listings before writing your title. If the listings that actually sold use a pattern, copy the structure rather than inventing your own.

Step 2: Fill in item specifics properly

Item specifics are not admin. They are search data. Buyers use filters constantly, especially on mobile. If your size, colour, brand, MPN, EAN, style, or capacity fields are missing, your listing can disappear when a buyer narrows results.

This matters for more than visibility. Better specifics also improve conversion because buyers can compare faster and ask fewer questions.

Step 3: Price for conversion, not pride

In 2026, pricing is one of the strongest indirect Cassini signals because it affects whether buyers click and buy. A listing that gets impressions but no sales sends a weak message. A listing priced close to real sold comps usually performs better.

Use this simple process:

1. Search sold items for the same model, condition, and bundle.
2. Look at the last 30-90 days, not one random high sale.
3. Adjust for flaws and completeness such as missing box, wear, or extra accessories.
4. Build in fees, postage, and return risk before you list.

If you want a clean pricing workflow, pair this article with ListingPro UK and our detailed pricing guide. Pricing well helps rankings because it helps conversions.

Step 4: Improve click-through rate with better thumbnails

Before Cassini sees a sale, it often sees a click. Your main image has a huge effect on click-through rate. Beginners sometimes focus only on SEO, but poor photos can sink an otherwise relevant listing.

• Use bright, clean lighting: natural daylight near a window is enough.
• Choose a simple background: white, light grey, or a clean neutral surface.
• Make the first image obvious: show the full item, centred, with no clutter.
• Photograph flaws clearly: honest photos reduce returns and help trust.

Better images increase clicks, and better descriptions reduce disputes. Cassini benefits from both.

Step 5: Protect seller performance signals

Search visibility is not only about the listing. It is also about your account behaviour. eBay wants buyers to have a smooth experience, so seller performance still matters.

For beginners, the biggest operational signals are:

1. Dispatch on time: set a handling time you can actually meet.
2. Upload tracking consistently: especially for higher-risk categories.
3. Keep descriptions accurate: fewer surprises means fewer returns.
4. Respond quickly to issues: unresolved cases damage trust and metrics.

If your account is messy, Cassini cannot fully rescue poor performance. A smaller number of accurate, well-run listings beats a large pile of rushed ones.

Step 6: Use Seller Hub every day

Seller Hub is the easiest way for beginners to understand what Cassini is already telling them. You do not need advanced software. You just need to look at the right numbers regularly.

What to watch inside Seller Hub

• Impressions: are buyers even seeing the listing?
• Page views: if impressions are high but views are low, the title or thumbnail may be weak.
• Sales conversion: if views are decent but sales are poor, pricing or trust may be the issue.
• Returns and defects: too many problems can hurt future visibility.

For a proper dashboard walkthrough, read our existing Seller Hub guide. If you use Seller Hub daily, Cassini stops feeling like guesswork because you can see where the leak is.

Step 7: Refresh weak listings the smart way

When a listing stalls, beginners often slash the price immediately. Sometimes that is right, but not always. Work in a sequence so you learn what changed performance.

1. Fix the title if the keywords are vague or missing model details.
2. Improve the first photo if views are low.
3. Complete specifics if buyers cannot find you in filters.
4. Review pricing last against recent sold comps.

Make one meaningful change, give it time, then review results in Seller Hub. Random edits every few hours make it harder to know what actually helped.

Step 8: Avoid myths about the algorithm

There are still plenty of bad Cassini takes floating around. A few myths waste a lot of beginner time:

• "Stores automatically rank higher" - not directly. Better operations can help, but a store alone is not a ranking cheat code.
• "Free postage always wins" - not always. What matters is total value, buyer trust, and conversion.
• "Constant relisting fixes everything" - sometimes useful, but not a substitute for relevance and conversion.
• "More keywords always means more visibility" - inaccurate stuffing can hurt trust and create returns.

Step 9: Build a simple daily Cassini routine

You do not need to obsess over the algorithm. A 15-minute routine is enough for most new sellers.

That routine compounds. It improves both visibility and account quality, which is exactly where beginners start to see real momentum.