A Chat That Becomes an Order
Customers send their order the way they already do. It becomes a normal quote and order, with a payment link, and stock and price are checked again before you accept. If something sold out after the catalogue went round, the customer is told plainly and pays for nothing that isn't there.
- Receipts and order updates, by consent
- Messages at the plain message price
- Sent within WhatsApp's own limits
- Same order board as the shop

Stock and price are checked again before the order is accepted, so nobody pays for goods that have gone.