Yes, & when a large letter size item is left on the top of the letterboxes in a block of units & goes missing, guess who has to refund the buyer.

As most of our items are letters/large letters, we always worry when the buyer lives in a block of units. Most arrive, but when they don't, we just refund without an argument. Luckily, a few have arrived later & the buyer has let us know & paid again.