Not doing retries is a cost thing -- last mile is expensive (human drivers, fewer packages) and retrying delivery multiplies that cost 2x, 3x or more. Bufferbox

Not doing retries is a cost thing -- last mile is expensive (human drivers, fewer packages) and retrying delivery multiplies that cost 2x, 3x or more. Bufferbox (YC Summer 2012) was trying to reduce this cost before Google Shopping acquired and shut them down.