Read Section 7001(c)(1)(B)(iv) which says that prior to obtaining the consumer's consent for e-delivery of documents, you must inform the consumer:
"(I) how, after the consent, the consumer may, upon request, obtain a paper copy of an electronic record, and
(II) whether any fee will be charged for such copy"
Notice that the actual requirement is NOT to disclose the amount of a paper-copy fee, but rather to say (Y/N) whether there is a fee at all. Saying there will be a fee satisfies ESIGN. Stating (directly or by reference) the amount of the fee is above and beyond the minimum requirement.
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...gone fishing.