I've seen these lockers in supermarkets where you can pick up your order but never used them. Last night I saw a special on Amazon and when it came to delivery I chose the locker as it was the cheapest option at £1.99 instead of delivery of £3.99 and a pick up at the post office of a whopping £7. I'm sure it will be fine, but if there are issues how to do solve them, and how long do you have to collect it?