Only use Costco if you have the money. Get a Purdy Neat Things bag if you want to save money.
Mine is 6+ years old and will not need work for another 10+. No trips to Costco to replace their POS bags. No nothing. Just quality products from PNT.
No, I don't work for them or sell them or represent them. I am just a satisfied customer. Mine has been in airports and luggage bins all over the world and is going strong.