Hi, during covid-19 pandemic, we can help you guys use the shipping method you'd use, but FYI, DHL is much more expensive than EMS and even than EMS PREMIUM.
for a package weighs 1.255kg,
size 56 x 25 x 13cm
volumetric weight 3.5kg ( 56 x 25 x 13cm / 6000 (kg))
it costs 83750won now (including covid-19 surcharge 15,750)
Let's take it with DHL
This link is for the calculator for the getting estimation.
As you see below, apparently DHL delivery is much faster but also more expensive than ems.
* They use their own formula, they devide it with 5000, not 6000, which means, their volumetric weight is bigger than the one's from Korea Post. (Korea Post: 6000)
So the volumetric weight by DHL is over 3.5kg! It's 3.64kg.
The 202,000won on the image doesn't include covid-19 surcharge yet.
And if you even can get 50% discount, it is over 101,000won, which is more expensive than the normal ems price by Korea Post.