Amazon charge a flat rate for all books. For light books this can be a lot more than the actual cost, but for textbooks it's not unusual for them to cost more. I recently sent one that cost £8!(Original post by 3dglasses)
brilliant...loads cheaper BUT i do find the postage a bit of a rip off...quite often more than the book itself.
You do need to look at the postage and take the overall cost into account, but then you need to do that anyway wherever you buy from
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