Amazon has select
CamelBak Hydration Packs on sale with prices starting
$35.99.
Shipping is free.
Examples:
MerlinCycles.com also select
CamelBak Hydration Packs on sale with prices starting at
$47.49 for options listed below.
Shipping starts at $7.13.
Note, products from Merlin Cycle ship via Airmail from the UK
Available options: