Kid's UV Skinz swim sets
Stamps (I think they are 1c cheaper there!)
Kid's Carter's clothes when on sale, PJs usually
Kid's sheepskin boots
Batteries when on sale
Air filters when on sale
Tommy Bahamas folding beach chairs
Mini cukes
Sweet peppers
Berries
Asiago bagels
Rotisserie chicken
Rosemary ham slices
Various chips, depending on what's on sale
Kerrygold butter
Fish sticks (the Trident brand ones)
Lily B frozen burritos
Dishwasher tablets, name brand, on sale
Trash bags, Kirkland brand
Generic meds
Honest Co all over wash, on sale
Diapers and Wipes, Kirkland brand
Online - large appliances (best or equal prices as other places, but with free install and "stuff" like cords and all included) and cosmetics and matching clothes for my baby and oldest.
Christmas toys occasionally, but sometimes the prices aren't as good as catching a good sale other places so I definitely check before buying.
I've only ever returned the Kirkland shampoo and conditioner. They are apparently the same as Pureology and my hair did great with it, but the scent was bad and my skin broke out.