Costco might not be your first thought when you're in the market for a new television or laptop — but it should be. The warehouse chain sells a large and consistently well-curated line of electronics at prices that are competitive with Best Buy, Amazon, and the manufacturers' own websites — with a set of additional benefits that no pure electronics retailer matches: a 90-day return window on all consumer electronics with no restocking fees, a free Concierge Services warranty