Can't find this online yet, the links for the costco.com packs of tickets are:
10pack $86.99 http://www.costco.com/AMC-Gold-Ex...69852.html
4pack $33.99 http://www.costco.com/AMC-Gold-Ex...39542.html
In the past online has been discounted to a certain amount (I think $5-6 per ticket) for the 10 and 4packs, and then in B&M they have had 2packs a smidge cheaper. Non-member surcharge online for the 10pack is currently 4.35 with my shipping showing $3. Non-member surcharge online for the 4pack is currently 1.70 with my shipping showing $0.
OP where did you see this advertised?
10 pack is now $71.99 online - $15 off original price. Limit 2 per family. Thanks OP!