weird as it's in my cart and place order is clickable
https://www.amazon.com/Lord-Rings-Online-Samwise-Download/dp/B00EUHVOW2
I haven't found it on the LOTRO Store, and Daybreak Game Company amazon's account doesn't have more copies:
4- pack: https://www.amazon.com/gp/product/B00EUHVPKI/
Samwise pack: https://www.amazon.com/gp/product/B00EUHVOW2/
I wanted the 4-pack since it was cheaper (and includes classes, character slots and etc) so i could wait for a sale to buy the rest. A shame so far :/