How cart partitioning, shipping line calculations, and Paystack payment processing work on ColaSolar.

Multi-Vendor Checkout & Payments

ColaSolar Marketplace allows you to add products from different distributors into a single unified shopping cart.

How Multi-Vendor Cart Works

When you place items from Vendor A (e.g. Lagos Warehouse) and Vendor B (e.g. Port Harcourt Warehouse) into your cart:

Sub-Orders Generated: The platform automatically partitions your order into distinct vendor sub-orders.
Itemized Shipping Lines: Each vendor calculates specific freight/courier shipping rates based on item weight and destination address.
Single Checkout Payment: You make one single payment at checkout. Funds are escrowed and securely allocated to respective vendor balances upon delivery verification.

Debit / Credit Cards: Visa, Mastercard, Verve processed securely via Paystack.
Bank Transfer: Instant bank transfer with dynamic account numbers generated at checkout.
USSD: Pay directly from your mobile banking app (737, 919, 894, etc.).
Solar BNPL / Installment Loans: Flexible 3 to 12-month payment plans for eligible verified accounts.

Order Security: All Paystack payment webhooks use DB-backed idempotency protection to prevent duplicate charges or unconfirmed orders.

Authorize the transaction using card OTP or instant bank transfer.

Once authorized, you will be redirected to /checkout/callback where your unique Order Code (e.g. CS-98412) is validated.

A branded receipt detailing sub-orders and vendor contacts is emailed to your registered email address.