Shipping is where reselling margins quietly disappear. A item that looks like a solid profit on paper can turn into a few quid net once you factor in the label, the packaging, and the time spent at the post office. For UK sellers sending parcels regularly, the difference between using whichever courier comes to mind and actually comparing rates can add up to hundreds of pounds over a year.
The good news is that courier comparison sites have made this straightforward. You enter the parcel weight and dimensions, and within seconds you get live rates from every major UK courier side by side. Here is what is available and how each option works.
Courier comparison sites
These platforms aggregate rates from multiple couriers so you can book the cheapest option for each parcel without checking every carrier individually.
Interparcel
Interparcel is one of the most widely used comparison tools among UK small sellers. You enter your parcel dimensions and weight, and it returns live rates from couriers including Evri, DPD, DHL, and UPS. There is no account required for a one-off booking, and no minimum volume — useful if you are sending a handful of parcels a week rather than hundreds.
Interparcel also offers collection from your address rather than requiring a post office or drop-off, which matters if you are running a reselling operation from home and do not want to make daily trips. Their drop-off network covers most UK postcodes through partner locations.
For most light to medium parcels going to UK addresses, Interparcel consistently returns competitive rates. It is worth running a quote here first before checking anywhere else — the process takes under two minutes and the comparison is live, not indicative.
Parcel2Go
Parcel2Go is the largest parcel comparison site in the UK by volume. It covers a similar set of couriers to Interparcel and the quote process is comparable. Where Parcel2Go tends to differentiate is on domestic volume — it processes enough shipments to sometimes negotiate rates that come out cheaper on specific courier and weight combinations.
If Interparcel's quote for a given parcel seems high, checking Parcel2Go for the same dimensions takes two minutes and sometimes returns a meaningfully different result. Running both for large or heavy parcels is worth the extra step.
Parcel ABC
Parcel ABC is a smaller comparison platform targeting individuals and small businesses. It covers a narrower range of couriers than Interparcel or Parcel2Go but is occasionally cheaper on specific routes, particularly for heavier parcels going to less common destinations. Worth bookmarking as a third check when the other two return similar prices and you want to be sure you are not missing something cheaper.
Direct shippers
DHL eCommerce UK
DHL eCommerce is worth considering if you are shipping a consistent volume of similar-sized parcels. Booking directly rather than through a comparison site removes the intermediary, and DHL's ecommerce tier is specifically designed for small businesses and individual sellers rather than large commercial shippers.
DHL's tracking is among the best in the industry, which matters if you sell higher-value items where buyers expect detailed updates. For lighter items where price is the primary consideration, a comparison site will usually beat the direct DHL rate. For heavier parcels where reliability and tracking quality matters as much as price, DHL direct is worth comparing.
Platform-specific shipping
Before booking a courier separately for every sale, check whether the platform handles shipping for you.
Vinted provides prepaid labels for UK sellers at rates negotiated through their courier partnerships. For lighter clothing items, Vinted's label is often cheaper than anything you would find through a comparison site. Accept the Vinted label by default and only book externally if you have a specific reason the platform label will not work for that parcel.
eBay offers its own label integrations through the seller hub, giving access to Royal Mail and other carriers at pre-negotiated rates. Worth checking whether the eBay rate beats the comparison site quote before booking externally.
Depop does not provide labels — you arrange your own shipping, which is where comparison sites become most useful.
Reducing costs over time
A few things that make a meaningful difference across many shipments:
Weigh every parcel accurately before booking. A parcel that falls just over a weight band can double the label cost on some couriers. A cheap kitchen scale pays for itself quickly.
Use the right size box or mailer. Couriers charge on volumetric weight for larger parcels, meaning a light item in an oversized box can cost significantly more than the actual weight suggests. Poly mailers for clothing, right-sized boxes for everything else.
Drop off rather than requesting collection where possible. Collection adds a few pounds to most courier quotes. If you have a drop-off point nearby, the saving is immediate.
For sellers shipping more than ten to fifteen parcels a week, it is worth opening accounts with one or two couriers directly rather than always booking through comparison sites — direct account rates at that volume can undercut comparison site prices.
Checking username availability across UK platforms
If you are setting up as a seller on eBay UK, Depop, or Vinted, Username Inspector checks whether your intended username is available across all three platforms at the same time, alongside Etsy, Poshmark, Mercari, and more. Worth running before you commit to a name across multiple accounts.
Frequently asked questions
What is the cheapest way to send a parcel in the UK?
For most small parcels, a comparison site like Interparcel or Parcel2Go gives you the cheapest available rate across multiple couriers without checking each one separately. Rates vary by weight, size, and destination, so a quick quote is faster than guessing.
Which courier is best for eBay sellers in the UK?
There is no single answer — it depends on parcel weight and size. Comparison sites let you enter your dimensions and see live rates from Evri, DPD, DHL, and others side by side, so you can pick the cheapest option for each specific order.
Is Interparcel good for small sellers?
Yes. There is no minimum volume requirement, so you can book a single parcel at competitive rates without a contract. They also offer collection from your address if dropping off is not convenient.
How do I reduce shipping costs when selling on Vinted or Depop in the UK?
Vinted provides its own prepaid labels — check whether their rate beats a comparison site before booking externally. For Depop, sellers arrange their own shipping, so using a comparison site for each order is standard.