$3858 for family of 5 traveling in 2 cabins(so charged as 4 adults and 1 child even though we are 2 A and 3 C) This is for the 7 night Eastern trip Nov. 2. No insurance, no air in 2 category 10 rooms.
As someone said, the fee to join is refundable if you are unhappy, as is any merchandise from the store if you aren't satisfied.
As someone mentioned, they typically never asked for your Costco number. That used to be the case, but Costco has switched travel companies to partner with. The new one always seems to ask for the number. If your reservation was made prior to Nov. 12, 2001, they transfer you to the old company for assistance. I think they have closed the loophole for Costco prices without a Costco membership on that Nov. date.