Flat Rate - but only for larger orders?

Hello everyone,

Here's what i'm looking to achieve;

Per Item delivery of £2.50 per SKU, but once the custom orders 12 items it moves to a flat rate of £10.

I can see how to do the per item pricing and the flat rate, but not sure how to combine the two.

Regards

Shipping methods in OpenCart are independent of one another, which means each one will be presented as its own option. For what you describe you'd need something like Item-Based Shipping.