it can vary pretty tremendously within the same city. i lived 3 miles from the "downtown" part of Seattle in a house, and 50% of my Amazon deliveries were late by 1-3 days. my friends lived 2 miles further out from the downtown in the same direction, but in a 100-unit apartment and they never had issues.

not that 4 day delivery is bad. but promising to deliver something, and then regularly failing, is. i'd make plans for the thing being here by the promised day and just regularly be screwed.