26 Costco Secrets Employees Won’t Tell You 9. Don't Overspend For Ink Getting your cartridge refill can make you shell out up to $50 per pack. And if it runs dry frequently, the amount may cost you hundreds of dollars. Costco’s Photo Center, however, is much cheaper and starts at $7.00. Drop off your package for one hour and get it done while you’re shopping. 8. Don't Waste Time with Other Coupons Coupons make a safe bet for many people, but Costco only accepts deals and offers from its own company. Costco app is the right way to enjoy the best deals. NEXT Costco Secret