she was handling only cut-rate deliveries anyway , often enough backup deliveries , information too tricky to risk being sent where security eyes could intercept it , yet not so tricky anyone wanted to pay large sums for better couriers ... and once she had been the very best of couriers , one of the highest paid in dahl , inheritor of a tradition thousands of years old , as convoluted and ornate with language and ritual as any religious commerce off trantor .