all the buildings you enter: houses of friends/family, supermarkets, hospitals, transport, restaurants, offices, all with potentially fatal fake electrics
hopefully the fire door and extinguishers weren't bought from amazon
The few tradespeople I know don't even shop at Lowes. They have accounts at supply houses that don't even offer public retail sales.
You certainly could buy material off Amazon but if you’re passing the cost onto the customer, why not just buy the real thing?