Why WhatsApp is not a stopgap — it is a sales test.
WhatsApp has about 40 million monthly users in the UK. Most of your customers already have it on their phone, and they already trust it. That matters. The barrier to sending a message is far lower than the barrier to finding your shop, creating an account, and checking out. For a first pass at whether people will actually buy from you online, it is hard to beat.
I am not suggesting WhatsApp replaces a proper shop long-term. I am suggesting it tells you whether one is worth building in the first place. That is a different question, and an important one.
What WhatsApp Business actually gives you.
The free WhatsApp Business app (separate from the personal one, available on Android and iOS) adds a handful of things the normal app does not have. You get a business profile with your address, category, and opening hours. You get a product catalogue — a scrollable list of items with photos, prices, and descriptions. You get quick replies so you are not typing the same thing forty times a day. And you get a link people can tap to open a conversation with you directly, which you can put in your Instagram bio, on a QR code on a market stall, or in a Facebook post.
None of that costs anything. The paid tier, WhatsApp Business Platform, is for bigger operations sending thousands of automated messages. You do not need it at this stage.
Taking actual payment — here is what works.
WhatsApp itself cannot process card payments. So you need a payment link alongside it. The two I see working best for small UK traders are Stripe and SumUp.
Stripe lets you create a payment link in about two minutes — you log into your dashboard, describe the item, set a price, and Stripe generates a link you paste into WhatsApp. The customer clicks it, pays by card, and Stripe pays you into your bank account within a couple of days. Fees are around 1.5% plus 20p per transaction for UK cards. You do need to complete Stripe's identity verification first, which takes a day or two, so set that up before you need it.
SumUp has a similar payment link feature and is slightly friendlier to set up for non-technical people. Their fees are 2.5% per online transaction — a touch higher than Stripe, but if you are already using SumUp for your card reader at a market, having everything under one account is tidier.
Either way, the flow is: customer messages you on WhatsApp, you confirm the order, send them a payment link, they pay, you pack and post. Simple. Trackable. No shop needed.
Royal Mail and delivery — sort this before your first order.
One thing that catches people out is not knowing their postage costs before they start quoting. Royal Mail's Click & Drop account (free to register) lets you print labels at home and drop parcels at any post office or Royal Mail Delivery Office — Deal, Folkestone, Canterbury, wherever is nearest to you. You can top up credit online and the labels pull through your order details automatically once you connect a sales channel, though at the WhatsApp stage you will just be entering them manually.
Know your typical parcel weight before you start selling. A large letter up to 750g is around £1.55 with Click & Drop. A small parcel up to 2kg is around £3.70. These numbers change, so check the current rates — but knowing the rough figure means you can price your products with postage factored in, rather than finding out later you have been subsidising every order.
Where to find the first buyers in Kent.
The two places I see working fastest for East Kent traders are local Facebook groups and Instagram. Not paid ads — organic posts in the right places.
For Facebook, search for buy-and-sell groups specific to your town. Deal, Sandwich, Whitstable, and Faversham all have active ones. A post with a clear photo, a short description, a price, and "message me to order" is enough to start. People in those groups are already in a buying mindset.
For Instagram, a product photo with a simple caption and "WhatsApp me on [number] to buy" in your bio does the job. You do not need a Linktree or a fancy link-in-bio tool at this stage — just a direct WhatsApp link, which looks like wa.me/447449303889 with your number substituted in.
You can also print a QR code — free from any QR generator — that opens a WhatsApp conversation with you pre-filled. Stick it on your market stall, on your packaging, on a card inside every order you send out. It converts surprisingly well in person.
When WhatsApp stops being enough.
There comes a point where managing orders by message gets unwieldy. You will feel it before you consciously notice it — orders going missing in a busy chat thread, payment links being fiddly to generate for each individual, customers asking the same questions about delivery that you have to answer individually each time.
That is the moment to build a proper shop. Not before. At that stage, you know your products sell online, you know your delivery setup works, and you know roughly what your customers are willing to pay. You are building a shop to handle volume you already have, not to conjure volume out of nowhere. That is a much more sensible investment.
For most of the Kent traders I have worked with, that tipping point is somewhere between 20 and 50 orders a month handled by WhatsApp. Below that, the manual overhead is manageable. Above it, a Shopify or WooCommerce shop starts paying for itself in time saved within the first month.
What to build when you are ready.
A proper online shop does things WhatsApp cannot: it handles stock levels automatically, sends order confirmation emails, integrates with Royal Mail Click & Drop so you are not typing addresses, and works while you are asleep. It also looks more credible to first-time buyers who have not heard of you before — which matters as you grow beyond your existing network.
The WhatsApp catalogue you built carries across, too. The product descriptions you have refined through real conversations become your product page copy. The photos you have tested in the groups become your hero images. You are not starting from scratch — you are formalising something that already works. That tends to produce better shops than the ones built entirely speculatively, because every decision is grounded in what real buyers have already responded to.
One thing to do before anything else.
Set up a Google Business Profile if you have not already. It is free, takes about 20 minutes, and means that when someone in Deal or Canterbury searches for what you sell, your business has a chance of showing up in the map results. You do not need a website or a shop for it — you can list your WhatsApp number as the contact method and link to your Instagram or Facebook page as your web presence for now. It is one of those things that compounds quietly in the background while you are busy doing everything else.