Reasons shopping at Costco is the worst By Saundra Latham of Cheapism | Warehouse Woes Look, we love Costco. Really. From those Kirkland Signature products we can’t live without to the best (and cheapest) rotisserie chicken anywhere, we happily renew our membership every year. But we’re only human, and there are still things about the warehouse shopping experience we could definitely do without. Here’s our list of grievances.