This weekend I went to my local Costco and tried to get a price adjustment on something I bought on December 20th that ended up sale priced in this month's coupon book and they were unable to find a record of the corresponding order under my membership number. Essentially they told me I've got to take it up with Google Express.
Based on a good half an hour working through it with Costco in person at the customer service desk and another half an hour on the phone with Google Express it seems that even though you must have a membership number to order Costco through GSX those sales don't seem to be applied to your membership which means Costco has no record of your purchase which also means the following...
Price adjustments if your item goes on sale in the next coupon book? Nope. GSX will not price match. I couldn't get Costco to give it to me in store as they had no record of the purchase and GSX is very adamant that they do not price match.
Costco's extended 2nd year warranty? Nope. Costco has no record of your purchase.
Costco's very generous returns policy? GSX will only match to 90 days. You must return the item to GSX. 6 months later and it craps out? Nope and Costco won't take it because they are unable to locate a record of the purchase.
2% Cash Back for Executive Members? Dubious. They claim it's applied but based on what I *think* is happening...all of the orders are going under GSXs membership number so I'm unsure how Costco would be able to apply that cashback if those sales aren't applied to your membership number.
GSX also wasn't able to explain to me why they required me to input my membership number if the sales aren't being attached to my membership number with Costco.
GSX is great if you need a little grocery shopping done but just be aware that while you are getting this stuff from Costco you technically aren't buying from them...GSX is. So if you don't feel like going and picking up that wide screen TV definitely do not think that GSX is the easiest way to handle it...it may end up costing you more in the long run.