I've never ordered anything on auto delivery, mostly because I'm too lazy to go through to customer services and take longer ordering, so curious to see your comments. If I like an item enough I just buy extra and make the postage saving at the time.
Interestingly QVC say, hey every 60 days we will send you another just as you are running out but haha that doesn't take account of many of our stockpiles. Not as if many of us are just using the one range lol so can see only works if particularly loyal to one item and never tempted by something else.