Costco might be best known for its wide selection of food items that can be bought in bulk — but if you've only been shopping the warehouse retailer for baked goods and different cuts of meat, you're going to want to broaden your horizons. The furniture and home category at Costco is one of the most consistently underappreciated sections of the warehouse ecosystem. Modular sectional sofas that a competing furniture retailer sells for $3,999 appear at Costco for just over $2,0