So can someone explain the DHL price increases to me? I don't really understand what's actually going on with that.

Just looking at the sell post Nalops has for his Volcanicus set.

God Neptune cost me S$265 (240+25) posted.
Volcanicus I've paid S$210, with $35 shipping. With Nalops' post in mind , I had another look at the expected postage now - does OMP seriously expect me to pay an additional S$39 without communicating the fact?