One-Pager COD

One-Pager COD is a landing page for selling a single physical product to people who will not put a card into a website. It replaces the checkout with a form that writes the order into a WhatsApp message — name, colour, quantity, total and address — so the buyer reads their own order before sending it, which is exactly what stops disputes at the door.
Sections, in order

Sticky navbar with anchors and a price-bearing order button.
Hero — a COD coverage badge, the price with a struck-through original, three plain promises (pay on delivery, seven-day return, free delivery over two units), a live stock line, and an order card with colour, quantity, address and a total that updates as the quantity changes.
Photo strip — four product shots.
What arrives in the box — four numbered items with specifications, so nobody expects an accessory that is not there.
Why this one — three cards taking on the cheaper alternative directly, including a measured battery claim and a replaceable cell.
Compared — a table against the $19 version and the power-bank-plus-torch combination, with rows where the alternatives win left in.
Reviews — three, one of them four stars about the weight.
Delivery and payment — two cards: delivery times and costs by zone, and how cash on delivery actually works, including refusing at the door.
FAQ — six questions: opening before paying, real battery life, whether "solar" is honest, warranty, returns, wholesale.
Closing CTA and a sticky bottom bar repeating price, stock and despatch cut-off.

Design and style. Direct and warm: burnt orange with a teal accent on cream, Plus Jakarta Sans over Inter, big product photography, rounded cards. Quantity total, the WhatsApp order composer, sticky bar, FAQ accordion, scroll reveal and mobile menu are vanilla JavaScript with no libraries.
Before you publish. Two things must be changed together: the PRICES object in the script and the quantity labels in the form. The total is calculated from the script, so editing only the visible label quotes one price and sends another — the fastest way to lose a COD sale at the door. Replace the WhatsApp number in the script and in the footer link, update the COD city count everywhere it appears, and make the delivery table match what your courier actually charges. Keep at least one row in the comparison where an alternative wins; a table where you win everything is the one buyers stop reading.
Best suited to single-product sellers, cash-on-delivery markets, gadget and homeware imports, health and beauty products sold through chat, and any seller whose customers order by message rather than by checkout.