If I'm grabbing a couple items, I can be in and out of my Costco on the way back from work in 10m if the timing is right.

But yeah the wrong day, and it's 30m at least.

People go to Costco and only get a couple of things and not a cart load? You've got more self control than I.

	▲	halostatue an hour ago \| parent [-]
		I find it easier to do when I bike to Costco _without_ my trailer. (I have two good sized panniers and can end up with ~$150 of foodstuffs packed well in them no problem. More often than not, I get less than that and add more stops to the trip to pick up from 3-4 places while out. And I get my exercise while I'm at it.)