Can you please give example for that 1 day for 5$ from ... lets say Sofia, Bulgaria to Lisbon, Portugal . I had to pay good 30EUR last time I used them.
Well, I dunno the prices for that - but the 5$ was literally what I paid the last time I sent a package from Germany to Britain, which was surprisingly cheap.
Sending stuff abroad from Germany with DHL is really cheap. Sending stuff from the UK to Germany is a whole lot more expensive (independent of carrier). It was double to thrice the price last I checked. Anyone happen to know why?
Not sure if this is actually connected to your DHL pricing, but there is a surprising amount of cheap air transit to the UK because it is a major transport hub. Fresh flowers and cut vegetables are flown to the UK from Kenya, simply because there is enough spare capacity (there are planes that would otherwise fly empty from Kenya->UK) that the air freight is very cheap. These 'backloads' as they are called are more common to the UK because, being a transport hub, empty planes are more likely to fly to the UK to collect another load to carry.
It also complicates things like calculating the carbon footprint of goods. Do fresh flowers from Kenya have a high carbon footprint, given that the plane that carried them would have flown there regardless of whether or not it carried the flowers?
It could be because there is more space on the planes travelling from UK->Germany than Germany->UK, or perhaps DHL have a German hub that means there are many more routes there?