The delivery vans have doors at the side with rows of shelves that these trays fit onto, so it’s a lot better protected than a parcel thrown into the back of a van.
Picture: http://www.shetlandtimes.co.uk/wp-content/uploads/2015/07/Sa...
But the benefit has to be offset by those who choose to have bags because you get 10 times as many bags as you would if doing the packing yourself.
Not sure of the exact cost but there is a flat charge so it is the same for 1 bag or 100.
'Without bags' isn't always practical with some homes where there is restricted access.
Ever since they ruined Fresh by just lumping it in with Prime Now deliveries, most items come in disposable paper bags with disposable insulation inserts for frozen stuff.