Other members cannot see anything from an order number

Did you have the correct weights/measurements etc of the package in eBay?

Was it originally suppose to go as freight, or did putting everything together make it over size/weight 

And no, packing everything into one package does not always mean it is going to be cheaper to send that way

But the buyer pays 'postage' in any case

Postage costs go by weight/size, not the number of things in a box