Sent cheaper item by mistake; Costco refuse to refund the difference, only full return

born_again

theoretica said:

Once you return this, they will have it in stock - could you suggest returning it for a full refund and then have this cheaper one sent to you as a 'new' purchase?

Seems the logical option.

Wonder if part of the problem is the duty payable on alcohol & systems (either retailer or HMRC) are unable to handle such a issue?