Before buying anything technological at Costco, I suggest reading the reviews. Costco seems to be snatching up "bargains" by buying large quantities of products which are not moving well at retail due to performance issues. First example I noticed was the PanaSonic DECT 6.0 phone set. The price was attractive so I read the reviews. All negative, due to connectivity problems. Yesterday, they had a special on the Norelco Arcitec electric shaver. The reviews were almost all one star out of five, some from people who had other Norelco shavers that they liked, but considered the Arcitec to be garbage.
Costco has a liberal return policy, but carrying second class goods undermines consumer confidence.