In reply to timjones:
> Why not just use the crates, charge a deposit and leave them for collection at the next delivery?
Because a deposit that is enough to cover the cost of the crates would be off-putting, whereas if it was just £1 a pop people would nick them for other purposes as £1 would be a cheap price for one of those crates. Also a full crate is quite heavy.
TBH I think the crates are a bit of a flaw in the system. Safeway years ago did a fledgeling "self scan" system for which they used "Greenboxes" which were purchased by the shopper (so could work on the same basis) but were smaller than crates so easier to carry. Those would work better and probably be cheaper.
https://i.ebayimg.com/00/s/NzY4WDEwMjQ=/z/Dy4AAOSwcLxYJw7a/$_86.JPG is a picture of them.
FWIW the crates seem to cost about £6 a pop though I'd imagine the supermarket gets them cheaper, so maybe that would be viable. Though the "greenboxes" would be easier to store if you live in a flat or very small house, and easy to carry in from the front door.
https://www.toteshop.co.uk/eco-crates-containers.html?URLName=eco-crates-co...
Post edited at 10:30